TWI395194B

TWI395194B - Image adjusting apparatus

Info

Publication number: TWI395194B
Application number: TW97100345A
Authority: TW
Inventors: Chun Ming Cheng; Tsung Hsiang Huang
Original assignee: Princeton Technology Corp
Priority date: 2007-08-23
Filing date: 2007-08-23
Publication date: 2013-05-01
Also published as: TW200910322A

Description

影像調整裝置Image adjustment device

本發明係相關於一種影像調整裝置，尤指一種用以調整影像色彩的影像調整裝置。The invention relates to an image adjusting device, in particular to an image adjusting device for adjusting the color of an image.

如同標準之陰極射線管顯示器(CRT)一樣，場發射平面顯示器(field emission display,FED)藉由照射高能量電子至一螢光幕之影像元件(像素)上而發光，然後，此受激發的螢光物質將其電子能轉換為可見光。然而，與利用一條或三條電子束來掃描於一螢光幕內之光柵圖形之傳統陰極射線顯示器(CRT)不同之處，在於場發射平面顯示器採用固定型電子束掃描各像素之彩色元件。與傳統陰極射線管顯示器(CRT)之掃描電子束至螢幕間距離相較，其電子源至螢幕之間的距離變的非常小。此外，場發射平面顯示器所消耗的功率遠少於陰極射線管顯示器。上述條件使得場發射平面顯示器(FED)已成為越來越受歡迎的顯示器之一。Like a standard cathode ray tube display (CRT), a field emission display (FED) emits light by illuminating high-energy electrons onto image elements (pixels) of a phosphor screen, and then excited. Fluorescent substances convert their electron energy into visible light. However, unlike conventional cathode ray displays (CRTs) that use one or three electron beams to scan a raster pattern in a phosphor screen, the field emission flat panel display uses a fixed electron beam to scan the color elements of each pixel. Compared with the distance between the scanning electron beam and the screen of a conventional cathode ray tube display (CRT), the distance between the electron source and the screen becomes very small. In addition, field emission flat panel displays consume far less power than cathode ray tube displays. The above conditions make field emission flat panel displays (FEDs) one of the more popular displays.

而，場發射平面顯示器之每一影像像素(Pixel)的紅(Red)、綠(Green)、藍(Blue)三種顏色的色度值會因為本身亮度減低時，而產生程度不同的顏色偏移(Shift)，而造成影像色彩的失真。因此實有必要發展一種能有效補償影像畫面於低亮度的情形下可能發生的色彩偏移的問題，進一步提昇顯示影像的品質。However, the chromaticity values of the red (Red), green (Green), and blue (Blue) colors of each image pixel (Pixel) of the field emission flat panel display may have different degrees of color shift due to the decrease in brightness of the image. (Shift), causing distortion of the image color. Therefore, it is necessary to develop a problem that can effectively compensate the color shift that may occur in the case where the image is low in brightness, thereby further improving the quality of the displayed image.

因此，確實有必要提出一種影像調整裝置，針對顯示影像於低亮度時進行色彩的調整，藉此以提昇顯示影像的品質。Therefore, it is indeed necessary to propose an image adjusting device for adjusting the color of the display image at a low brightness, thereby improving the quality of the displayed image.

因此，本發明的目的之一在於提供一種調整影像的色彩之影像調整裝置，以解決習知技術所面臨的問題。Accordingly, it is an object of the present invention to provide an image adjustment apparatus for adjusting the color of an image to solve the problems faced by the prior art.

本發明之實施例係揭露一種影像調整裝置，用以調整一影像畫面之色彩，該影像調整裝置包含有一轉換模組、一處理模組、一輸出模組、一顯示模組、一量測模組以及一計算模組。轉換模組用以將一輸入影像轉換為一影像訊號。處理模組耦接於該轉換模組，用以根據一增益值調整該影像訊號，以產生一輸出訊號。輸出模組耦接於該處理模組，用以根據該輸出訊號，產生一輸出影像。顯示模組耦接於該輸出模組，用以顯示該輸出影像。量測模組耦接於該顯示模組，用以量測該輸出影像，以產生一量測值。計算模組耦接於該量測模組以及該處理模組，用以根據該量測值產生該增益值。The embodiment of the present invention discloses an image adjusting device for adjusting the color of an image frame. The image adjusting device includes a conversion module, a processing module, an output module, a display module, and a measuring module. Group and a computing module. The conversion module is configured to convert an input image into an image signal. The processing module is coupled to the conversion module for adjusting the image signal according to a gain value to generate an output signal. The output module is coupled to the processing module for generating an output image according to the output signal. The display module is coupled to the output module for displaying the output image. The measurement module is coupled to the display module for measuring the output image to generate a measured value. The calculation module is coupled to the measurement module and the processing module for generating the gain value according to the measured value.

請參閱第1圖，第1圖所示為本發明所提出之影像調整裝置之示意圖。本實施例係揭露一種影像調整裝置10，用以調整一影像畫面之色彩，影像調整裝置10包含有一轉換模組12、一處理模組14、一輸出模組16、一顯示模組18、一量測模組20以及一計算模組22。轉換模組12用以將一輸入影像I_IMG 轉換為一影像訊號S_IMG 。處理模組14耦接於轉換模組12，用以根據一增益值V_G 調整該影像訊號S_IMG ，以產生一輸出訊號S_OUT 。輸出模組16耦接於處理模組14，用以根據該輸出訊號S_OUT ，產生一輸出影像IMG。顯示模組18耦接於輸出模組16，用以顯示輸出影像IMG。於一實施例中，顯示模組18係為一場發射平面顯示器(field emission display,FED)。量測模組20耦接於顯示模組18，用以量測該輸出影像IMG，以產生一量測值M_Value 。於一實施例中，量測模組20係為一般常見的色溫分析儀，可用以量測輸出影像IMG所呈現出來的色彩資訊，並根據該色彩資訊產生該量測值M_Value 。計算模組22耦接於量測模組20以及處理模組14，用以根據該量測值M_Value 產生該增益值V_G 。Please refer to FIG. 1. FIG. 1 is a schematic diagram of an image adjusting device according to the present invention. The image adjustment device 10 is configured to adjust the color of an image frame. The image adjustment device 10 includes a conversion module 12, a processing module 14, an output module 16, a display module 18, and a The measurement module 20 and a calculation module 22 are included. The conversion module 12 is configured to convert an input image I _IMG into an image signal S _IMG . The processing module 14 is coupled to the conversion module 12 for adjusting the image signal S _IMG according to a gain value V _G to generate an output signal S _OUT . The output module 16 is coupled to the processing module 14 for generating an output image IMG according to the output signal S _OUT . The display module 18 is coupled to the output module 16 for displaying the output image IMG. In one embodiment, the display module 18 is a field emission display (FED). The measurement module 20 is coupled to the display module 18 for measuring the output image IMG to generate a measured value M _Value . In one embodiment, the measurement module 20 is a common color temperature analyzer, which can be used to measure the color information presented by the output image IMG, and generate the measured value M _Value according to the color information. The calculation module 22 is coupled to the measurement module 20 and the processing module 14 for generating the gain value V _G according to the measured value M _Value .

轉換模組12係將輸入影像I_IMG 轉換為一特定影像格式之該影像訊號S_IMG 。於一實施例中，該特定影像格式係一RGB影像格式。The conversion module 12 converts the input image I _IMG into the image signal S _IMG of a specific image format. In one embodiment, the particular image format is an RGB image format.

處理模組14包含有一判斷單元141以及一補償單元143。判斷單元141用以判斷該影像訊號S_IMG 是否在一預定範圍內，並根據判斷結果產生一判斷訊號S_D 。補償單元143耦接於判斷單元141，用以根據該判斷訊號S_D 以及該增益值V_G 調整影像訊號S_IMG ，以產生輸出訊號S_OUT 。其中，處理模組14係用以判斷該影像訊號S_IMG 之亮度是否在一預定範圍內，若是，判斷單元141係產生該判斷訊號S_D ，處理模組14則會根據判斷訊號S_D 以及增益值V_G 調整該影像訊號S_IMG ，產生該輸出訊號S_OUT 。若否，則處理模組14會直接將影像訊號S_IMG 當成輸出訊號S_OUT 輸出至輸出模組16。於一實施例中，預定範圍係指該影像訊號S_IMG 之亮度低於20%以下。關於此所述之預定範圍，使用者可根據自身的需求及喜好自行設定，並非以此實施例為限。本實施例中所設定的影像訊號S_IMG 之亮度低於20%，係將20%以下的亮度視為低亮度，當判斷出影像訊號S_IMG 處於低亮度的狀態下，處理模組14才會進行影像訊號S_IMG 的調整，否則則會直接將影像訊號S_IMG 當成輸出訊號S_OUT 直接進行輸出。The processing module 14 includes a determining unit 141 and a compensation unit 143. The determining unit 141 is configured to determine whether the image signal S _IMG is within a predetermined range, and generate a determination signal S _D according to the determination result. The compensation unit 143 is coupled to the determining unit 141 for adjusting the image signal S _IMG according to the determining signal S _D and the gain value V _G to generate the output signal S _OUT . The processing module 14 is configured to determine whether the brightness of the image signal S _IMG is within a predetermined range. If yes, the determining unit 141 generates the determining signal S _D , and the processing module 14 according to the determining signal S _D and the gain The value V _G adjusts the image signal S _IMG to generate the output signal S _OUT . If not, the processing module 14 directly outputs the image signal S _IMG to the output module 16 as the output signal S _OUT . In one embodiment, the predetermined range is that the brightness of the image signal S _IMG is less than 20%. Regarding the predetermined range described herein, the user can set it according to his own needs and preferences, and is not limited to this embodiment. The brightness of the image signal S _IMG set in this embodiment is less than 20%, and the brightness below 20% is regarded as low brightness. When it is determined that the image signal S _{IMG is} in low brightness, the processing module 14 will The image signal S _IMG is adjusted. Otherwise, the image signal S _IMG is directly output as the output signal S _OUT .

此外，於一實施例中，顯示模組18係根據複數個條件值產生複數個輸出影像IMG，量測模組20係用以量測相對應該複數個輸出影像IMG之複數個量測值M_Value ，其中該複數個條件值中每一個條件值係為一色溫值。計算模組22係包含有一對照表(圖未示)，該對照表(圖未示)係具有複數個條件值以及相對應之複數個增益值V_G ，而該複數個量測值M_Value 中每一個量測值係分別對應於該複數個增益值V_G 中之一增益值。補償單元143係根據量測模組20所量測之量測值M_Value 相對應產生之該增益值V_G ，調整該影像訊號S_IMG ，以產生該輸出訊號S_OUT 。於本實施例中，於顯示模組18出廠時係可先利用量測模組20量測各種不同色溫值下的輸出影像IMG而產生相對應之量測值M_Value ，再進一步根據該些量測值M_Value 產生相對應的增益值V_G ，最終將該些色溫值以及該些增益值V_G 儲存於對照表(圖未示)中，藉此日後僅需透過對照表(圖未示)即可自動調整影像訊號S_IMG ，最後產生調整後的輸出影像IMG，而不需每次皆進行量測，如此可以提升使用者的便利性。Further, in one embodiment, the display module 18 to generate a plurality of output values based image IMG according to a plurality of conditions, the measurement system used for measuring module 20 relative to a plurality of output image IMG be a plurality of measured values M _Value And wherein each of the plurality of condition values is a color temperature value. The calculation module 22 includes a comparison table (not shown) having a plurality of condition values and a corresponding plurality of gain values V _G , and the plurality of measurement values M _Value Each of the measured values corresponds to one of the plurality of gain values V _G , respectively. The compensation unit 143 adjusts the image signal S _{IMG according} to the gain value V _G corresponding to the measured value M _Value measured by the measurement module 20 to generate the output signal S _OUT . In the embodiment, when the display module 18 is shipped from the factory, the measurement module 20 can first measure the output image IMG at different color temperature values to generate a corresponding measured value M _Value , and further according to the amount. The measured value M _Value generates a corresponding gain value V _G , and finally stores the color temperature values and the gain values V _G in a comparison table (not shown), so that only a comparison table (not shown) is needed in the future. The image signal S _IMG can be automatically adjusted, and finally the adjusted output image IMG can be generated without measuring each time, which can improve user convenience.

在本發明的各個實施例中，透過本發明的影像調整裝置進行調整後所產生的輸出影像，可以達成在顯示器的輸出影像低亮度的情況下自動調整輸出影像的色彩，而不會產生低亮度下影像色彩會產生色彩偏移，而進一步造成顯示畫面的品質不佳的問題，如此可提升顯示器顯示影像的能力，並且進一步提昇顯示影像的品質。In various embodiments of the present invention, the output image generated by the image adjusting device of the present invention can automatically adjust the color of the output image without a low brightness when the output image of the display is low in brightness. The color of the lower image will produce a color shift, which further causes the problem of poor quality of the display image, thereby improving the display image display capability and further improving the quality of the displayed image.

以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

10．．．影像調整裝置10. . . Image adjustment device

12．．．轉換模組12. . . Conversion module

14．．．處理模組14. . . Processing module

16．．．輸出模組16. . . Output module

18．．．顯示模組18. . . Display module

20．．．量測模組20. . . Measurement module

22．．．計算模組twenty two. . . Computing module

141．．．判斷單元141. . . Judging unit

143．．．補償單元143. . . Compensation unit

I_IMG ．．．輸入影像I _IMG . . . Input image

S_IMG ．．．影像訊號S _IMG . . . Image signal

S_D ．．．判斷訊號S _D . . . Judgment signal

S_OUT ．．．輸出訊號S _OUT . . . Output signal

M_Value ．．．量測值M _Value . . . Measured value

V_G ．．．增益值V _G . . . Gain value

IMG．．．輸出影像IMG. . . Output image

第1圖所示為本發明所提出之影像調整裝置之示意圖。Fig. 1 is a schematic view showing the image adjusting device of the present invention.

10．．．影像調整裝置10. . . Image adjustment device

12．．．轉換模組12. . . Conversion module

14．．．處理模組14. . . Processing module

16．．．輸出模組16. . . Output module

18．．．顯示模組18. . . Display module

20．．．量測模組20. . . Measurement module

22．．．計算模組twenty two. . . Computing module

141．．．判斷單元141. . . Judging unit

143．．．補償單元143. . . Compensation unit

I_IMG ．．．輸入影像I _IMG . . . Input image

S_IMG ．．．影像訊號S _IMG . . . Image signal

S_D ．．．判斷訊號S _D . . . Judgment signal

S_OUT ．．．輸出訊號S _OUT . . . Output signal

M_Value ．．．量測值M _Value . . . Measured value

V_G ．．．增益值V _G . . . Gain value

IMG．．．輸出影像IMG. . . Output image

Claims

一種影像調整裝置，用以調整一影像畫面之色彩，該影像調整裝置包含有：一轉換模組，用以將一輸入影像轉換為一影像訊號；一處理模組，耦接於該轉換模組，用以判斷該影像訊號之亮度是否低於一預定值，若是，則根據一增益值調整該影像訊號，以產生一輸出訊號，若否，則直接輸出該影像訊號做為該輸出訊號；一輸出模組，耦接於該處理模組，用以根據該輸出訊號，產生一輸出影像；一顯示模組，耦接於該輸出模組，用以顯示該輸出影像；一量測模組，耦接於該顯示模組，用以量測該輸出影像，以產生一量測值；以及一計算模組，耦接於該量測模組以及該處理模組，用以根據該量測值產生該增益值。 An image adjustment device for adjusting the color of an image frame, the image adjustment device comprising: a conversion module for converting an input image into an image signal; and a processing module coupled to the conversion module And determining whether the brightness of the image signal is lower than a predetermined value, and if so, adjusting the image signal according to a gain value to generate an output signal; if not, directly outputting the image signal as the output signal; The output module is coupled to the processing module for generating an output image according to the output signal; a display module coupled to the output module for displaying the output image; and a measurement module, And being coupled to the display module for measuring the output image to generate a measured value; and a computing module coupled to the measuring module and the processing module for determining the measured value This gain value is generated.

如申請專利範圍第1項所述之影像調整裝置，其中該轉換模組係將該輸入影像轉換為一特定影像格式之該影像訊號。 The image adjustment device of claim 1, wherein the conversion module converts the input image into the image signal of a specific image format.

如申請專利範圍第2項所述之影像調整裝置，其中該特定影像格式係為一RGB影像格式。 The image adjustment device of claim 2, wherein the specific image format is an RGB image format.

如申請專利範圍第1項所述之影像調整裝置，其中該顯示模組係為一場發射平面顯示器(field emission display,FED)。 The image adjustment device of claim 1, wherein the display module is a field emission display (FED).

如申請專利範圍第1項所述之影像調整裝置，其中該處理模組包含有：一判斷單元，用以判斷該影像訊號之該亮度是否低於該預定值，並根據判斷結果產生一判斷訊號；以及一補償單元，耦接於該判斷單元，用以根據該判斷訊號以及該增益值調整該影像訊號，以產生該輸出訊號。 The image adjustment device of claim 1, wherein the processing module comprises: a determining unit, configured to determine whether the brightness of the image signal is lower than the predetermined value, and generate a determining signal according to the determining result; and a compensation unit coupled to the determining unit for determining the signal and the gain according to the determining unit The value adjusts the image signal to generate the output signal.

如申請專利範圍第5項所述之影像調整裝置，其中該預定值為20%。 The image adjusting device of claim 5, wherein the predetermined value is 20%.

如申請專利範圍第5項所述之影像調整裝置，其中該顯示模組係根據複數個條件值產生複數個輸出影像，該量測模組係用以量測相對應該複數個輸出影像之複數個量測值。 The image adjustment device of claim 5, wherein the display module generates a plurality of output images according to a plurality of condition values, wherein the measurement module is configured to measure a plurality of corresponding plurality of output images. Measurement value.

如申請專利範圍第7項所述之影像調整裝置，其中該計算模組係包含有一對照表，該對照表係具有複數個條件值以及相對應之複數個增益值。 The image adjustment device of claim 7, wherein the calculation module comprises a comparison table having a plurality of condition values and corresponding plurality of gain values.

如申請專利範圍第8項所述之影像調整裝置，其中該複數個條件值中每一個條件值係為一色溫值。 The image adjusting device of claim 8, wherein each of the plurality of condition values is a color temperature value.

如申請專利範圍第8項所述之影像調整裝置，其中該複數個量測值中每一個量測值係分別對應於該複數個增益值中之一增益值。 The image adjusting device of claim 8, wherein each of the plurality of measured values corresponds to one of the plurality of gain values.

如申請專利範圍第10項所述之影像調整裝置，其中該補償單元係根據該量測模組所量測之該量測值所相對應之該增益值，調整該影像訊號，以產生該輸出訊號。 The image adjustment device of claim 10, wherein the compensation unit adjusts the image signal according to the gain value corresponding to the measured value measured by the measurement module to generate the output. Signal.

如申請專利範圍第1項所述之影像調整裝置，其中該量測模組係為一色溫分析儀，該色溫分析儀係用以量測該輸出影像之色彩資訊，以產生該量測值。 The image adjustment device of claim 1, wherein the measurement module is a color temperature analyzer, and the color temperature analyzer is configured to measure color information of the output image to generate the measurement value.