TWI833517B - Lighting color calibration method and lighting color calibration device - Google Patents

A lighting color calibration method and a lighting color calibration device are provided. The lighting color calibration method is used for calibrating a lighting color of a light-emitting unit disposed on a peripheral device, and the method includes receiving a first color of a first color space used by a display device, and the first color is larger than a second color space that a coloured light belongs to and the coloured light is emitted by the light-emitting unit; transforming the first color of the first color space to a calibration color of the second color space according to a color-difference calibration matrix; and emitting, by the light-emitting unit, the coloured light by using the calibration color.

發光色彩校正方法及發光色彩校正裝置Luminous color correction method and luminous color correction device

本案有關於一種色彩校正方法及色彩校正裝置，特別是有關於一種應用於發光元件的色彩校正方法及色彩校正裝置。This case relates to a color correction method and a color correction device, and in particular to a color correction method and a color correction device applied to light-emitting elements.

市面上常見的周邊裝置例如滑鼠或鍵盤上會設置發光二極體(LED)，藉由發光二極體的發光顏色、閃爍態樣等方式來增加周邊裝置的設計感，提升消費者購買的慾望。然而，周邊裝置所設置的發光二極體的硬體設計較為複雜，並且發光二極體可以顯示的色彩會受到發光二極體的材料、電路設計或電壓等因素影響，導致發光的色彩無法符合螢幕所顯示的色彩，而存在發光二極體的發光色彩與螢幕顯示的色彩之間存在色差的問題。Common peripheral devices on the market, such as mice or keyboards, are equipped with light-emitting diodes (LEDs). The lighting colors and flashing patterns of the LEDs are used to increase the design sense of the peripheral devices and enhance consumers’ purchasing experience. desire. However, the hardware design of the light-emitting diodes installed in the peripheral devices is relatively complex, and the colors that the light-emitting diodes can display will be affected by factors such as the material, circuit design, or voltage of the light-emitting diodes, resulting in the color of the light that cannot meet the requirements. The color displayed on the screen, and there is a problem of color difference between the luminous color of the light-emitting diode and the color displayed on the screen.

據此，如何降低發光二極體顯示色彩時造成的色差為本案欲解決的技術問題。Accordingly, how to reduce the color difference caused by light-emitting diodes when displaying colors is the technical problem to be solved in this case.

根據本案的一實施例，揭示一種發光色彩校正方法，應用於設置於一周邊裝置上的一發光元件，該方法包括：接收一顯示裝置所使用的一第一色域的一第一色彩，其中該第一色域大於該發光元件發出一色光所屬的一第二色域；根據一色差校正矩陣轉換該第一色域的該第一色彩為該第二色域的一校正色彩；以及透過該發光元件使用該校正色彩發出該色光。該方法更包括取得顯示裝置所使用的第一色域的一第二色彩；取得發光元件受控於根據第二色彩發出色光的一第三色彩(實際的發光色彩)；使用一色彩映射演算法計算第一色域的第二色彩映射至第二色域後的一第四色彩；以及使用第三色彩及第四色彩執行一多元迴歸演算法以獲得色差校正矩陣。According to an embodiment of the present invention, a luminescence color correction method is disclosed, which is applied to a light-emitting element provided on a peripheral device. The method includes: receiving a first color of a first color gamut used by a display device, wherein The first color gamut is larger than a second color gamut to which a color light emitted by the light-emitting element belongs; converting the first color of the first color gamut into a corrected color of the second color gamut according to a color difference correction matrix; and through the The light-emitting element uses the corrected color to emit the color light. The method further includes obtaining a second color of the first color gamut used by the display device; obtaining a third color (actual luminous color) of the light-emitting element controlled to emit light according to the second color; and using a color mapping algorithm Calculate the mapping of the second color of the first color gamut to a fourth color of the second color gamut; and perform a multiple regression algorithm using the third color and the fourth color to obtain a color difference correction matrix.

根據本案的一實施例，揭示一種發光色彩校正裝置，適用以校正一發光元件的發光色彩，其中該發光元件設置於一周邊裝置，發光色彩校正裝置包括一處理器及一儲存媒體。處理器經配置以接收一顯示裝置所使用的一第一色域的一第一色彩，其中發光元件用以發出一第二色域的一色光以及第一色域大於第二色域。儲存媒體耦接該處理器，儲存媒體經配置以儲存一色差校正矩陣。其中處理器經配置以根據色差校正矩陣轉換第一色域的第一色彩為第二色域的一校正色彩，使該發光元件使用校正色彩發出色光。處理器更經配置以取得顯示裝置所使用的第一色域的一第二色彩，取得發光元件受控於根據第二色彩發出色光的一第三色彩(實際的發光色彩)，使用一色彩映射演算法計算第一色域的第二色彩映射至第二色域後的一第四色彩，以及使用第三色彩及第四色彩執行一多元迴歸演算法以獲得色差校正矩陣。According to an embodiment of the present invention, a luminescence color correction device is disclosed, which is suitable for correcting the luminescence color of a light-emitting element, wherein the light-emitting element is provided in a peripheral device. The luminescence color correction device includes a processor and a storage medium. The processor is configured to receive a first color in a first color gamut used by a display device, wherein the light-emitting element is used to emit a color light in a second color gamut and the first color gamut is greater than the second color gamut. The storage medium is coupled to the processor, and the storage medium is configured to store a color aberration correction matrix. The processor is configured to convert the first color of the first color gamut into a corrected color of the second color gamut according to the color difference correction matrix, so that the light-emitting element uses the corrected color to emit color light. The processor is further configured to obtain a second color of the first color gamut used by the display device, obtain a third color (actual luminous color) in which the light-emitting element is controlled to emit light according to the second color, and use a color mapping The algorithm calculates mapping of the second color of the first color gamut to a fourth color after the second color gamut, and performs a multiple regression algorithm using the third color and the fourth color to obtain a color difference correction matrix.

茲就本案之實施例配合圖式，詳細說明如後。The embodiments of this case are described in detail below with reference to the drawings.

請參閱圖1，其為本案根據一實施例所繪示的發光色彩校正裝置的配置示意圖。發光色彩校正裝置100電性連接或通訊耦接顯示裝置200及周邊裝置400。Please refer to FIG. 1 , which is a schematic configuration diagram of a luminescent color correction device according to an embodiment of the present invention. The luminescence color correction device 100 is electrically connected or communicatively coupled to the display device 200 and the peripheral device 400 .

於一實施例中，發光元件300設置於周邊裝置400(例如殼體上或內部)，並透過周邊裝置400提供的電流及電壓來執行發光操作，用以凸顯或點綴周邊裝置400的整體外觀。In one embodiment, the light-emitting element 300 is disposed on the peripheral device 400 (for example, on or inside the casing), and performs light-emitting operations through the current and voltage provided by the peripheral device 400 to highlight or embellish the overall appearance of the peripheral device 400.

於一實施例中，發光色彩校正裝置100執行一軟體來提供一色彩選擇介面(圖1未繪示)。色彩選擇介面包括顯示裝置200所使用的色域(gammut)的所有色彩。顯示裝置200用以顯示色彩選擇器介面，讓使用者可以透過色彩選擇介面選取欲應用在發光元件300的一色彩。In one embodiment, the luminescence color correction device 100 executes software to provide a color selection interface (not shown in FIG. 1 ). The color selection interface includes all colors in the color gamut (gammut) used by the display device 200 . The display device 200 is used to display a color selector interface, allowing the user to select a color to be applied to the light-emitting element 300 through the color selection interface.

於一實施例中，在發光色彩校正裝置100獲得欲應用在發光元件300的色彩之後，會傳送包括改變色彩的操作指令至周邊裝置400。周邊裝置400的控制器或韌體(圖1未繪示)會基於操作指令改變發光元件300所發出的色光。於一實施例中，顯示裝置200使用的第一色域大於發光元件300使用的第二色域。舉例而言，顯示裝置200可以顯示的色彩範圍大於發光元件300發出色光的色彩範圍。In one embodiment, after the luminescence color correction device 100 obtains the color to be applied to the luminescent element 300, it sends an operation instruction including changing the color to the peripheral device 400. The controller or firmware (not shown in FIG. 1 ) of the peripheral device 400 changes the color light emitted by the light-emitting element 300 based on the operating instructions. In one embodiment, the first color gamut used by the display device 200 is larger than the second color gamut used by the light-emitting element 300 . For example, the display device 200 can display a color range that is larger than the color range in which the light-emitting element 300 emits color light.

於一實施例中，發光色彩校正裝置100是個人電腦、筆記型電腦或桌上型電腦，本案不限於此。In one embodiment, the luminescence color correction device 100 is a personal computer, a notebook computer or a desktop computer, but the present case is not limited thereto.

於一實施例中，周邊裝置400是滑鼠、鍵盤或耳機，任何可以擴充個人電腦、筆記型電腦或桌上型電腦的執行功能的裝置均屬本案的範疇。In one embodiment, the peripheral device 400 is a mouse, keyboard, or headset. Any device that can expand the execution functions of a personal computer, notebook computer, or desktop computer falls within the scope of this application.

於一實施例中，發光元件300是發光二極體(LED)、有機發光二極體(OLED)、次毫米發光二極體(Mini LED)或微發光二極體(Micro LED)。In one embodiment, the light-emitting element 300 is a light-emitting diode (LED), an organic light-emitting diode (OLED), a sub-millimeter light-emitting diode (Mini LED) or a micro-light emitting diode (Micro LED).

於一實施例中，顯示裝置200可以為支援標準紅綠藍色彩空間(sRGB, standard Red Green Blue)的螢幕、顯示器、投影機或具有顯示功能之電子裝置。In one embodiment, the display device 200 may be a screen, a monitor, a projector, or an electronic device with a display function that supports the standard red, green, and blue color space (sRGB, standard Red Green Blue).

於一實施例中，發光色彩校正裝置100包括處理器110及儲存媒體120。處理器110耦接於儲存媒體120。儲存媒體120用以儲存一色差校正矩陣122。In one embodiment, the luminescence color correction device 100 includes a processor 110 and a storage medium 120 . The processor 110 is coupled to the storage medium 120 . The storage medium 120 is used to store a color difference correction matrix 122 .

於一實施例中，處理器110可以為中央處理器(central processing unit，CPU)、系統單晶片(System on Chip，SoC)、應用處理器、數位訊號處理器(digital signal processor)或特定功能的處理晶片或控制器。In one embodiment, the processor 110 may be a central processing unit (CPU), a system on chip (SoC), an application processor, a digital signal processor (digital signal processor) or a specific function Handle wafers or controllers.

於一實施例中，儲存媒體120可以包括隨機存取記憶體(Random Access Memory, RAM)、非揮發性記憶體(例如快閃記憶體(Flash memory)、唯讀記憶體(Read-Only Memory, ROM)、硬碟機(Hard Disk Drive, HDD)、固態硬碟(Solid State Drive, SSD)或光儲存器。In one embodiment, the storage medium 120 may include random access memory (RAM), non-volatile memory (such as flash memory), read-only memory (Read-Only Memory, ROM), Hard Disk Drive (HDD), Solid State Drive (SSD) or optical storage.

於一些情況下，發光元件300所發出的色光可能會與使用者觀看顯示裝置200時選擇的顏色不符而產生色差的問題。舉例而言，使用者透過發光色彩校正裝置100執行的色彩選擇介面選擇出欲應用在發光元件300的色彩後，發光色彩校正裝置100會產生一控制訊號，例如脈衝寬度調變(PWM)值，並傳送控制訊號(PWM值)至周邊裝置400。周邊裝置400的韌體會使用此控制訊號(PWM值)來發光元件300顯示所選擇的顏色。然而，發生色差的原因來自於發光元件300所使用的色域(即硬體所能發出的色光的色彩空間)比顯示裝置200的色域小。由於發光元件300存在硬體上的限制，即使韌體使用此控制訊號(PWM值)來控制發光元件300，期待發光元件300發出所選擇的顏色，若使用者基於顯示裝置200所選擇的顏色超出發光元件300所使用的色域所能表現的範圍，發光元件300實際發出的色光就會與使用者選擇的顏色產生色差。In some cases, the color light emitted by the light-emitting element 300 may not match the color selected by the user when viewing the display device 200, resulting in a color difference problem. For example, after the user selects the color to be applied to the light-emitting element 300 through the color selection interface executed by the light-emitting color correction device 100, the light-emitting color correction device 100 will generate a control signal, such as a pulse width modulation (PWM) value, And transmit the control signal (PWM value) to the peripheral device 400 . The firmware of the peripheral device 400 will use this control signal (PWM value) to cause the light-emitting element 300 to display the selected color. However, the reason for the color difference is that the color gamut used by the light-emitting element 300 (that is, the color space of the color light that the hardware can emit) is smaller than the color gamut of the display device 200 . Due to hardware limitations of the light-emitting element 300, even if the firmware uses this control signal (PWM value) to control the light-emitting element 300, it is expected that the light-emitting element 300 will emit the selected color. If the color selected by the user based on the display device 200 exceeds Within the range that the color gamut used by the light-emitting element 300 can express, the color light actually emitted by the light-emitting element 300 will have a color difference from the color selected by the user.

請參照圖2，其為本案根據一實施例所繪示的第一色域及第二色域的示意圖。顯示裝置200能夠顯示第一色域500的色彩，以及發光元件300能夠顯示第二色域600的色彩。如圖2所示，第一色域500大於第二色域600。於此實施例中，第一色域500包含第二色域600。Please refer to FIG. 2 , which is a schematic diagram of the first color gamut and the second color gamut according to an embodiment of the present invention. The display device 200 can display colors of the first color gamut 500, and the light-emitting element 300 can display colors of the second color gamut 600. As shown in FIG. 2 , the first color gamut 500 is larger than the second color gamut 600 . In this embodiment, the first color gamut 500 includes the second color gamut 600 .

當使用者觀看顯示裝置200選出第一色域500的第一色彩A1、B1及C1時，在未進行色彩校正的情況，發光元件300會使用本身硬體支援的第二色域600的實際色彩A、B及C來發出實際色光。雖然發光元件300是根據使用者選擇的第一色彩A1、B1及C1來發光，但由於第二色域600小於第一色域500，因此發光元件300實際發出的色光將會對應至另一色彩(例如色彩A、B及C)。When the user views the display device 200 and selects the first colors A1, B1, and C1 of the first color gamut 500, without performing color correction, the light-emitting element 300 will use the actual colors of the second color gamut 600 supported by its own hardware. A, B and C to emit the actual color light. Although the light-emitting element 300 emits light according to the first colors A1, B1 and C1 selected by the user, since the second color gamut 600 is smaller than the first color gamut 500, the color light actually emitted by the light-emitting element 300 will correspond to another color. (eg colors A, B and C).

圖2所示的實際色彩A、B及C為未經過校正的色彩，因此未經過校正的實際色彩A與色彩空間中的第一色彩A1之間存在色差(例如圖2中的兩點距離)、未經過校正的實際色彩B與第一色彩B1之間存在色差，以及未經過校正的實際色彩C與第一色彩C1之間存在色差。色差的問題會導致發光元件300的發光顏色不符合使用者的預期。The actual colors A, B and C shown in Figure 2 are uncorrected colors, so there is a color difference between the uncorrected actual color A and the first color A1 in the color space (such as the distance between the two points in Figure 2) , there is a color difference between the uncorrected actual color B and the first color B1, and there is a color difference between the uncorrected actual color C and the first color C1. The problem of color difference may cause the light-emitting color of the light-emitting element 300 not to meet the user's expectations.

因此，本案提出的發光色彩校正裝置及發光色彩校正方法可以在不需要更換發光元件的前提下執行發光元件的發光色彩校正，解決使用者所感受到的色差問題。Therefore, the luminescence color correction device and luminescence color correction method proposed in this case can correct the luminescence color of the luminescence element without replacing the luminescence element, thereby solving the color difference problem experienced by the user.

請參照圖3，其為本案根據一實施例所繪示的發光色彩校正方法的流程圖。圖3的發光色彩校正方法可以應用於設置在周邊裝置的發光元件。為便於理解本案，以下說明請一併參照圖1至圖3。Please refer to FIG. 3 , which is a flow chart of a luminescence color correction method according to an embodiment of the present invention. The luminescence color correction method of FIG. 3 can be applied to light-emitting elements provided in peripheral devices. To facilitate understanding of this case, please refer to Figures 1 to 3 for the following description.

於步驟S310中，處理器110接收一顯示裝置200所使用的一第一色域的一第一色彩。In step S310, the processor 110 receives a first color of a first color gamut used by the display device 200.

於一實施例中，使用者可以觸發發光色彩校正裝置100中的特定應用程式(圖未標示)，以令發光色彩校正裝置100執行色彩選擇介面並透過顯示裝置200進行顯示。藉此，使用者可以透過顯示裝置200顯示的色彩選擇介面來選擇第一色彩，如圖2的第一色彩A1、B1及C1。此第一色彩為使用者欲應用在發光元件300的色彩(即使用者預期在發光元件300所發出色光的色彩)。In one embodiment, the user can trigger a specific application (not shown) in the luminescent color correction device 100 to cause the luminescent color correction device 100 to execute the color selection interface and display it through the display device 200 . Thereby, the user can select the first color through the color selection interface displayed on the display device 200, such as the first colors A1, B1 and C1 in FIG. 2. This first color is the color that the user wants to apply to the light-emitting element 300 (that is, the color that the user expects the light-emitting element 300 to emit).

於一實施例中，發光元件300可發出第二色域的一色光，該色光的色彩是例如圖2所示的實際色彩A、B及C，其中第二色域小於第一色域。此時的實際色彩A、B及C尚未經過校正。換言之，使用者此時會感受到實際色彩與從顯示裝置200中選擇出來的色彩之間的色差。In one embodiment, the light-emitting element 300 can emit a color light in a second color gamut, and the colors of the color light are, for example, the actual colors A, B, and C shown in FIG. 2 , where the second color gamut is smaller than the first color gamut. The actual colors A, B and C at this time have not yet been corrected. In other words, the user will feel the color difference between the actual color and the color selected from the display device 200 .

如上述說明，發光元件300的第二色域小於顯示裝置200的第一色域。雖然發光元件300是根據第一色彩來發光，然而若第一色彩超出第二色域的範圍，則發光元件300發出的色光的實際色彩會與第一色彩不相符，即該色光的實際色彩與第一色彩之間存在一色差。因此，在發光元件300發光之前，處理器110需要先校正色彩，以將校正後的色彩提供給發光元件300。As described above, the second color gamut of the light-emitting element 300 is smaller than the first color gamut of the display device 200 . Although the light-emitting element 300 emits light according to the first color, if the first color exceeds the range of the second color gamut, the actual color of the color light emitted by the light-emitting element 300 will not match the first color, that is, the actual color of the color light will not match the first color. There is a color difference between the first colors. Therefore, before the light-emitting element 300 emits light, the processor 110 needs to correct the color first to provide the corrected color to the light-emitting element 300 .

於步驟S320中，處理器110根據一色差校正矩陣122轉換第一色域的第一色彩為第二色域的一校正色彩。In step S320, the processor 110 converts the first color of the first color gamut into a corrected color of the second color gamut according to a color difference correction matrix 122.

於一實施例中，色差校正矩陣122用以將第一色域的第一色彩轉換為第二色域的校正色彩，使得第一色彩與校正色彩之間的第一色差小於第一色彩與未經過校正的實際色彩之間的第二色差。In one embodiment, the color difference correction matrix 122 is used to convert the first color of the first color gamut into the corrected color of the second color gamut, so that the first color difference between the first color and the corrected color is smaller than the first color and the uncorrected color. The corrected second color difference between the actual colors.

舉例而言，如圖2所示，色差校正矩陣122可以將第一色彩A1、B1及C1轉換為校正色彩A1’、B1’及C1’。由圖2可看出，第一色彩A1、B1及C1與校正色彩A1’、B1’及C1’間的第一色差，會小於第一色彩A1、B1及C1與實際色彩A、B及C間的第二色差，而使得發光元件300發出的色光的實際色彩更接近使用者透過顯示裝置200所選擇的第一色彩，以符合使用者的期待。For example, as shown in FIG. 2 , the color difference correction matrix 122 can convert the first colors A1, B1, and C1 into corrected colors A1', B1', and C1'. As can be seen from Figure 2, the first color difference between the first colors A1, B1 and C1 and the corrected colors A1', B1' and C1' will be smaller than the first colors A1, B1 and C1 and the actual colors A, B and C. The second color difference between the two colors makes the actual color of the color light emitted by the light-emitting element 300 closer to the first color selected by the user through the display device 200 to meet the user's expectation.

計算色差校正矩陣的步驟將於圖4說明。The steps for calculating the chromatic aberration correction matrix are illustrated in Figure 4.

於步驟S330中，發光元件300使用校正色彩來發出色光。In step S330, the light-emitting element 300 uses the corrected color to emit color light.

於一實施例中，如圖2所示，發光元件300使用校正色彩A1’、B1’及C1’來發出色光，因此發光元件300實際發出的色光的色彩會相同於在步驟S320中獲得的校正色彩。In one embodiment, as shown in FIG. 2 , the light-emitting element 300 uses the corrected colors A1', B1', and C1' to emit colored light. Therefore, the color of the colored light actually emitted by the light-emitting element 300 will be the same as the correction obtained in step S320. color.

如上述說明，未經過校正的實際色彩會與第一色彩有較大的色差。經過圖3的方法進行校正之後，發光元件300發出具有校正色彩的色光，校正色彩會盡可能接近於第一色彩，即降低色差的程度。於一實施例中，如圖2所示，色彩空間中的第一色彩A1與校正色彩A1’之間的第一色差(例如色彩A1及A1’的兩點間距離)小於第一色彩與未經過校正的實際色彩A之間的第二色差(例如色彩A1及A的兩點間距離)。As explained above, the actual color without correction will have a large color difference from the first color. After correction by the method in FIG. 3 , the light-emitting element 300 emits colored light with a corrected color. The corrected color will be as close as possible to the first color, that is, the degree of color difference will be reduced. In one embodiment, as shown in FIG. 2 , the first color difference between the first color A1 and the corrected color A1' in the color space (for example, the distance between two points of the colors A1 and A1') is smaller than the first color and the uncorrected color. The corrected second color difference between the actual colors A (for example, the distance between two points of colors A1 and A).

如此一來，本案在不需要更換發光元件300的前提下，可降低發光元件300發出的色光的實際色彩與使用者透過顯示裝置200選擇的第一色彩之間的色差，提升調整發光元件300的發光色彩的精準度，以符合使用者的期待。In this way, the present invention can reduce the color difference between the actual color of the color light emitted by the light-emitting element 300 and the first color selected by the user through the display device 200 without replacing the light-emitting element 300, and improve the adjustment of the light-emitting element 300. Luminous color accuracy to meet user expectations.

請參照圖4，其為本案根據一實施例所繪示的發光色彩校正方法的流程圖。圖4進一步說明發光色彩校正方法於獲得色差校正矩陣的詳細步驟，這些步驟可由圖1的發光色彩校正裝置100所執行。Please refer to FIG. 4 , which is a flow chart of a luminescence color correction method according to an embodiment of the present invention. FIG. 4 further illustrates the detailed steps of the luminescence color correction method in obtaining the color difference correction matrix. These steps can be performed by the luminescence color correction device 100 of FIG. 1 .

於步驟S410中，處理器110取得顯示裝置200所使用的第一色域的一第二色彩。In step S410, the processor 110 obtains a second color of the first color gamut used by the display device 200.

於一實施例中，處理器110依據使用者操作或自動從顯示裝置200使用的第一色域中選取多個第二色彩，作為後續用來計算色差校正矩陣122的樣本資料。In one embodiment, the processor 110 selects a plurality of second colors from the first color gamut used by the display device 200 based on user operations or automatically as sample data for subsequent calculation of the color difference correction matrix 122 .

於步驟S420中，於發光元件300根據第二色彩發出色光時，處理器110取得此色光的第二色域的一第三色彩。In step S420, when the light-emitting element 300 emits color light according to the second color, the processor 110 obtains a third color of the second color gamut of the color light.

於一實施例中，使用者或發光色彩校正裝置100令發光元件300直接根據第一色域的多個第二色彩來分別發出色光，並透過測量手段來獲得色光的實際色彩(即第三色彩)，以取得發光元件300受控於根據第二色彩發出色光的實際色彩(第三色彩)。其中發光元件300發出的實際色彩(第三色彩)屬於發光元件300可以顯示色彩的第二色域。In one embodiment, the user or the light-emitting color correction device 100 causes the light-emitting element 300 to directly emit color light according to a plurality of second colors in the first color gamut, and obtains the actual color of the color light (ie, the third color) through measurement means. ) to obtain the actual color (third color) in which the light-emitting element 300 is controlled to emit light according to the second color. The actual color (third color) emitted by the light-emitting element 300 belongs to the second color gamut of colors that the light-emitting element 300 can display.

於一實施例中，處理器110可執行軟體程式從周邊裝置400取得發光元件300發出色光的實際色彩(第三色彩)，或者透過其他測量手段(例如攝影機拍攝)來得到實際色彩(第三色彩)。In one embodiment, the processor 110 can execute a software program to obtain the actual color (the third color) of the light emitted by the light-emitting element 300 from the peripheral device 400, or obtain the actual color (the third color) through other measurement means (such as camera shooting). ).

於步驟S430中，處理器110使用一映射演算法計算第一色域的第二色彩映射至第二色域後的第四色彩。In step S430, the processor 110 uses a mapping algorithm to calculate the mapping of the second color of the first color gamut to the fourth color of the second color gamut.

於一實施例中，處理器110執行映射演算法來計算出多個第四色彩，多個第四色彩是透過轉換多個第二色彩所得到。藉由不同色域的色彩轉換，處理器110於步驟S430計算出發光元件300的硬體發光能力中最接近於第二色彩的第四色彩。In one embodiment, the processor 110 executes a mapping algorithm to calculate a plurality of fourth colors, and the plurality of fourth colors are obtained by converting a plurality of second colors. Through color conversion in different color gamuts, the processor 110 calculates the fourth color closest to the second color among the hardware light-emitting capabilities of the light-emitting element 300 in step S430.

於一實施例中，映射演算法可以為色域映射演算法(Gamut Mapping Algorithm)或非迭代最小色域切割演算法(Non-Iterative Minimum Gamut Clipping Algorithm)。In one embodiment, the mapping algorithm may be a Gamut Mapping Algorithm or a Non-Iterative Minimum Gamut Clipping Algorithm.

於一實施例中，處理器110執行色域映射演算法或非迭代最小色域切割演算法來轉換第二色彩至第四色彩。In one embodiment, the processor 110 executes a color gamut mapping algorithm or a non-iterative minimum color gamut cutting algorithm to convert the second color to the fourth color.

值得一提的是，圖4的發光色彩校正方法不限制步驟S420及步驟S430的執行順序，步驟S420及步驟S430可先後執行或者同時執行。It is worth mentioning that the luminescence color correction method in FIG. 4 does not limit the execution order of steps S420 and S430. Steps S420 and S430 can be executed one after another or at the same time.

於步驟S440中，處理器110使用第三色彩及第四色彩執行一線性轉換演算法以獲得色差校正矩陣122。In step S440, the processor 110 uses the third color and the fourth color to perform a linear conversion algorithm to obtain the color difference correction matrix 122.

於一實施例中，處理器110獲得多個第三色彩的第一向量空間與多個第四色彩的第二向量空間，並執行線性轉換演算法來計算出色差校正矩陣122，使得色差校正矩陣122可以用來將第一向量空間的向量(例如前述的第一色彩)轉換為第二向量空間的向量(例如前述的校正色彩)，讓發光元件300發出具有校正色彩的色光。In one embodiment, the processor 110 obtains a plurality of first vector spaces of the third color and a plurality of second vector spaces of the fourth color, and executes a linear transformation algorithm to calculate the color difference correction matrix 122, so that the color difference correction matrix 122 can be used to convert a vector in the first vector space (such as the aforementioned first color) into a vector in the second vector space (such as the aforementioned correction color), so that the light-emitting element 300 emits colored light with the corrected color.

值得一提的是，於使用者透過觀看顯示裝置200選擇一色彩(例如前述的第一色彩)並且發光色彩校正裝置100設定好發光元件300的色彩(例如前述的校正色彩，下稱操作色彩)之後，若使用者後續欲確認發光元件300的操作色彩為何，可透過發光色彩校正裝置100執行的軟體所提供的功能介面來進行確認。發光色彩校正裝置100可以向韌體讀取發光元件300的操作色彩來確認設定是否正確。由於操作色彩並非使用者透過觀看顯示裝置200所選擇的色彩(即操作色彩與使用者選擇的色彩之間存在偏差)，若於顯示裝置200呈現發光元件300的操作色彩給使用者觀看，使用者會誤以為韌體回傳的操作色彩就是自己原本設定的色彩。因此，於顯示裝置200上呈現韌體回傳的操作色彩之前，發光色彩校正裝置100可執行可逆矩陣運算，將發光元件300的操作色彩轉換回使用者原本設定的色彩，以令使用者再次確認。It is worth mentioning that when the user selects a color (such as the aforementioned first color) by viewing the display device 200 and the light-emitting color correction device 100 sets the color of the light-emitting element 300 (such as the aforementioned correction color, hereinafter referred to as the operating color) After that, if the user wants to confirm the operating color of the light-emitting element 300, he or she can confirm it through the functional interface provided by the software executed by the light-emitting color correction device 100. The light-emitting color correction device 100 can read the operating color of the light-emitting element 300 from the firmware to confirm whether the setting is correct. Since the operating color is not the color selected by the user by viewing the display device 200 (that is, there is a deviation between the operating color and the color selected by the user), if the operating color of the light-emitting element 300 is presented to the user on the display device 200, the user You will mistakenly think that the operation color returned by the firmware is the color you originally set. Therefore, before the operating color returned by the firmware is displayed on the display device 200, the luminous color correction device 100 can perform a reversible matrix operation to convert the operating color of the luminous element 300 back to the color originally set by the user, so as to allow the user to confirm again. .

於一實施例中，色差校正矩陣122為一可逆矩陣。因此，處理器110可計算出色差校正矩陣122的反矩陣，反矩陣用以將發光元件300所使用的色彩回推為顯示裝置200所使用的色彩。In one embodiment, the color difference correction matrix 122 is an invertible matrix. Therefore, the processor 110 can calculate the inverse matrix of the color difference correction matrix 122, and the inverse matrix is used to push back the color used by the light-emitting element 300 to the color used by the display device 200.

於一實施例中，處理器110將發光元件300所使用的第二色域的色彩乘以反矩陣以獲得顯示裝置200所使用的第一色域的色彩。In one embodiment, the processor 110 multiplies the color of the second color gamut used by the light-emitting element 300 by an inverse matrix to obtain the color of the first color gamut used by the display device 200 .

如此一來，若發光色彩校正裝置100透過韌體取得發光元件300的發光色彩，則在進行反矩陣運算之後可以得到使用者原本設定的色彩(即顯示裝置200所使用的色彩)，供使用者確認設定給發光元件300的操作色彩。In this way, if the luminous color correction device 100 obtains the luminescent color of the light-emitting element 300 through firmware, it can obtain the color originally set by the user (ie, the color used by the display device 200) after performing an inverse matrix operation for the user. Confirm the operation color set to the light-emitting element 300.

於一實施例中，線性轉換演算法可以為相關色彩空間的色彩轉換演算法(Color transfer in correlated color space)或多元線性迴歸(multiple regression)演算法。In one embodiment, the linear conversion algorithm may be a color transfer algorithm in correlated color space (Color transfer in correlated color space) or a multiple linear regression (multiple regression) algorithm.

綜上所述，本案提出一種發光色彩校正裝置及發光色彩校正方法，透過預先計算出色差校正矩陣對發光元件的色彩進行校正，據以解決發光元件的顯色不準確的問題，並且可減少發光元件與顯示裝置之間的色差。因此，本案可在不需要更換或升級發光元件的情況下提升發光元件的顯色精準度，增加發光元件與顯示裝置的色彩一致性。In summary, this case proposes a luminescence color correction device and a luminescence color correction method, which corrects the color of the luminous element by pre-calculating a color difference correction matrix, thereby solving the problem of inaccurate color rendering of the luminous element and reducing luminescence. Color difference between components and display devices. Therefore, this case can improve the color rendering accuracy of the light-emitting elements without replacing or upgrading the light-emitting elements, and increase the color consistency between the light-emitting elements and the display device.

以上所述僅為本案的具體實例，非因此即侷限本案的申請專利範圍，故舉凡運用本案內容所為的等效變化，均同理皆包含於本案的範圍內，合予陳明。The above are only specific examples of this case, and do not limit the scope of the patent application in this case. Therefore, all equivalent changes made by applying the content of this case are similarly included in the scope of this case and are hereby stated.

100:發光色彩校正裝置 110:處理器 120:儲存媒體 122:色差校正矩陣 200:顯示裝置 300:發光元件 400:周邊裝置 500:第一色域 600:第二色域 A、B、C:未經過校正的實際色彩 A1、B1、C1:第一色彩 A1’、B1’、C1’:校正色彩 S310~S330、S410~S440:步驟100: Luminous color correction device 110: Processor 120:Storage media 122: Chromatic aberration correction matrix 200:Display device 300:Light-emitting component 400:Peripheral devices 500: first color gamut 600: Second color gamut A, B, C: Actual colors without correction A1, B1, C1: first color A1’, B1’, C1’: Color correction S310~S330, S410~S440: steps

圖1為本案根據一實施例所繪示的發光色彩校正裝置的配置示意圖。FIG. 1 is a schematic configuration diagram of a luminescence color correction device according to an embodiment of the present invention.

圖2為本案根據一實施例所繪示的第一色域及第二色域的示意圖。FIG. 2 is a schematic diagram of the first color gamut and the second color gamut according to an embodiment of the present invention.

圖3為本案根據一實施例所繪示的發光色彩校正方法的流程圖。FIG. 3 is a flow chart of a luminescence color correction method according to an embodiment of the present invention.

圖4為本案根據一實施例所繪示的發光色彩校正方法的流程圖。FIG. 4 is a flow chart of a luminescence color correction method according to an embodiment of the present invention.

S310~S330:步驟 S310~S330: steps