TWI465104B - Image color correction system and the correction method thereof - Google Patents

Description

Image color correction system and correction method thereof

The present invention relates to a technique and system for image color correction, and more particularly to correcting a stereoscopic image color such that the stereoscopic image color conforms to the viewing color of a pair of color glasses.

Due to advances in stereoscopic image display technology, display devices for stereoscopic images have also become popular. Nowadays, the stereoscopic display device can be roughly divided into a naked eye visible type and a wearable glasses type, wherein the latter is most commonly used to wear the two-color glasses type, and the stereoscopic image can be viewed without using an expensive display device or using the original display device, and the two colors are The glasses can also be made by the user, so it is the most economical way for the general viewers. However, since the display devices each have their own independent color space, when the color space cannot be standardized, the color of the lens of the two-color glasses may not match the color space of the image content presented by the display device, and the original color should be respectively The different angles of view of the color lens are overlapped, which affects the clarity and stereoscopic effect of the video. That is, viewing the stereo image with the two-color stereo glasses may not be correctly viewed due to the matching of the color space of the display device and the color of the lens. The stereoscopic image.

The present invention provides an image color correction system and method for correcting the color of a display device when outputting a stereoscopic image, so that the color of the image matches the color of the lens of the bi-color glasses loaded by the user when viewing the stereoscopic image to generate an optimal image. Stereoscopic image display effect.

The invention provides an image color correction method, which is suitable for stereoscopic images showing stereoscopic effects through two-color glasses. The two-color glasses comprise two monochromatic lenses, each of which has a lens color, and the stereo image includes two image channels, respectively The pair of pairs should wait for the monochrome lens, the method includes: sequentially receiving the output colors corresponding to the plurality of monochrome images output by the display device, and the output colors are respectively corresponding to the plurality of colors included in the display device. Parameter; analyzing the brightness information of the color displayed by each monochrome image after penetrating the monochrome lens to obtain one of the monochromatic images corresponding to the extreme values of the plurality of brightness information; determining the monochrome image corresponding to the extreme value The color parameter is a target parameter; the color conversion relationship is obtained according to the target parameter and the preset color parameter, wherein the preset color parameter can be converted into the target parameter according to the color conversion relationship. The color conversion is performed according to the color conversion relationship to obtain the color of the image color corresponding to the image channel of the monochrome lens, so that the image color of the image channel is matched with the corresponding lens color.

The present invention provides another image color correction method, which is suitable for stereoscopic images that exhibit stereoscopic effects through bi-color glasses. The bi-color glasses include two monochromatic lenses, each of which has a lens color, and the method includes: sequentially receiving a plurality of monochromatic images output by the display device and penetrating one of the monochromatic lenses, the plurality of monochromatic images corresponding to a plurality of gamma values of one color parameter; analyzing each monochromatic image through the monochromatic lens The brightness information is obtained to obtain one of the monochromatic images corresponding to the extreme values of the plurality of brightness information; the gamma value of the monochrome image corresponding to the extreme value is determined as the target parameter; and a control signal is output according to the target parameter and the color parameter a display driving unit to the display device; the display driving unit adjusts a gamma value of the color parameter of the display device according to the target parameter, so that the color of the stereoscopic image output by the display device matches the color of the lens of the two-color lens.

The invention provides an image color correction system, the system is connected to the display device to correct the color of the stereoscopic image that presents the stereoscopic effect through the bicolor glasses; the bicolor glasses comprise two monochromatic lenses, each of which has a lens color, respectively. The system includes a color processing unit and an image receiving unit. The image receiving unit receives a plurality of monochromatic images output by the display device and penetrating one of the monochromatic lenses, each monochromatic image includes an output color, and the output color penetrates the monochromatic lens to display a corresponding expression color, and the output The color corresponds to the color parameter of the display device. The color processing unit further includes a brightness analysis unit and a color control unit. The brightness analysis unit is coupled to the image receiving unit and configured to analyze the brightness information of the color to obtain an extreme value of the plurality of brightness information, and determine that the color parameter corresponding to the extreme value is a target parameter; and the color control unit is based on the target parameter A color conversion relationship is generated with a preset color parameter, wherein the preset color parameter is convertible to the target parameter according to a color conversion relationship. The color of the stereoscopic image output by the display device is a color converted by a color conversion relationship, so that the color of the stereoscopic image matches the color of the lens of the two-color glasses.

The invention provides another image color correction system, which is connected to a display device for correcting the color of a stereoscopic image that exhibits a stereoscopic effect through the bi-color glasses; the bi-color glasses comprise two monochromatic lenses, each of which has a lens color respectively. The system includes: a color processing unit and an image receiving unit. The image receiving unit receives a plurality of monochrome images output by the display device and penetrating one of the monochrome lenses, and the plurality of monochrome images correspond to a plurality of gamma values of one color parameter. The color processing unit further includes a brightness analysis unit and a signal control unit. The brightness analysis unit is coupled to the image receiving unit and configured to analyze the brightness information of each monochrome image after passing through the monochrome lens to obtain an extreme value in the plurality of brightness information, and determine a gamma value corresponding to the extreme value. A target parameter. The signal control unit converts the target parameter and the color parameter into a control signal and transmits the control signal to the display device. Wherein, the display driving unit of the display device converts the control signal into the target parameter and the color parameter, and adjusts the gamma value of the color parameter of the display device according to the target parameter.

The details and features of the image color correction system and method provided by the present invention are further described with reference to the following embodiments.

[Image Color Correction System Embodiment]

FIG. 1 is a schematic diagram of an embodiment of an image color correction system 1 according to the present invention, including: an image receiving unit 10 and a color processing unit 12. The color processing unit 12 is coupled to a display device 3 for processing the color of the stereoscopic image to be displayed by the display device 3. After the image color correction system 1 corrects the color of the stereoscopic image, the user can wear a pair of bicolor glasses 2 to view the stereoscopic image displayed by the display device 3 to obtain a stereoscopic and rich visual effect.

Among them, the bi-color glasses 2 have two monochromatic lenses 20 of different colors, the two different colors being complementary to each other, such as red and cyan, or yellow and blue, or a combination of green and magenta. When the two colors complementary to each other overlap, they will appear black and opaque to ensure that the stereoscopic effect of the image can be correctly seen.

The image receiving unit 10 may include a lens that captures an image by sensitization and transmits the image and color received via the lens to the color processing unit 12 in a wired or wireless manner.

The color processing unit 12 can be a hardware control circuit embedded in a set top box or a software program installed in the set top box 4 for analyzing the image output by the image receiving unit 10 to the color processing unit 12. Color information to find the target color corresponding to the monochromatic lens 20. The color processing unit 12 controls the correction of the color of the stereo image based on the information of the target color, so that the color of the corrected stereo image matches the color of the lens of the bi-color glasses 2.

[Another Embodiment of Image Color Correction System]

2 is a schematic diagram of another embodiment of the image color correction system 1. Unlike the image color correction system 1 shown in FIG. 1, the color processing unit 12 shown in FIG. 2 is embedded in the display device 3a to cause the display device 3a. A color correction job can be performed by itself. In addition, the image receiving unit 10 can also be integrated with the color processing unit 12 in the same device, for example, integrated in the set top box 4 or the display device 3 as shown in FIG.

[Image Color Correction System Still Another Embodiment]

3 is a block diagram of an embodiment of an image color correction system 1 provided by the present invention. The image color correction system 1 of this example includes a video receiving unit 10, a color processing unit 12, an activation unit 14, and a data receiving unit 16. The color processing unit 12 further includes a brightness analysis unit 120, a color control unit 122, and a signal control unit 124. The image color correction system 1 is connected to the display device 3a for controlling the color of the image output by the display device 3a. In addition, when color correction of the stereo image is to be performed, a pair of two colors for viewing the stereo image may be used. The glasses 2 are disposed between the display device 3a and the image receiving unit 10.

The left and right eyes of the bicolor glasses 2 respectively have a monochromatic lens 20, and the color of the lenses of the two monochromatic lenses 20 are complementary to each other, and the black color of the two monochromatic lenses 20 will be black and opaque. The effects are, for example, complementary red and cyan, or blue and yellow, respectively. The stereoscopic image of the embodiment may include two image channels to respectively generate two images. When the user views the stereoscopic image through the display device 3a, the two-color glasses 2 may be worn through the two monochromatic lenses 20 The image of two image channels is received in one place and a stereoscopic view is generated, thereby enjoying the vivid visual effect provided by the stereo image.

In order to allow the user to view the stereoscopic image through the bi-color glasses 2, the best stereoscopic effect can be obtained, and the problem that the image color output by the display device 3a and the lens color reference of the bi-color glasses 2 are inconsistent and the image overlap of different image channels is generated, One of the monochromatic lenses 20 of the bicolor glasses 2 may be disposed between the display device 3a and the image receiving unit 10 for color correction. In particular, the image receiving unit 10 and the bicolor glasses 2 are sequentially placed in front of the display panel of the display device 3a to reduce the interference of ambient light and the effect of image correction.

The activation unit 14 is configured to control the image receiving unit 10 to start receiving images, so that the color processing unit 12 analyzes and processes the image content received by the image receiving unit 10. The activation unit 14 can be a button disposed on the set-top box 4 as shown in FIG. 1, and generates and transmits an activation signal to the image receiving unit 10 according to the user's pressing, so that the image receiving unit 10 starts receiving images. Before receiving the activation signal transmitted by the activation unit 14, the image receiving unit 10 does not need to perform the operation of receiving the image, so that the color processing unit 12 does not need to perform image analysis or processing, thereby saving power.

The data receiving unit 16 can be an infrared receiving module for receiving a preset color parameter input by the user by operating a remote control device (such as a remote controller). The user can select one of the plurality of options displayed by the display device 3a from the color processing unit 12 according to the result of visually observing one of the monochrome lenses 20, and select an option that is closest to the visual color of the monochrome lens 20 by the remote control device. For the color processing unit 12 to record as a preset color parameter. For example, if the left eye lens of the bicolor glasses is red, the option of "red" is selected by the remote controller among the several options displayed by the display device, and the data receiving unit 16 receives the command of the remote controller and records the pre-record. Set the color parameter to the red RGB value (255,0,0).

Since there is no uniform color gamut agreement between the two-color glasses 2 and the manufacturer of the display device 3a, each of the two-color glasses 2 and each of the display devices 3a may produce slight errors in color during production, so even two colors The manufacturer of the glasses 2 and the display device 3a also defines red (this refers to pure red, which does not include blue and green components at all), and the colors respectively presented may still be inconsistent.

In order to find out the color that can be displayed by the display device 3a and the color of the lens of the monochromatic lens 20, the display device 3a sequentially outputs the monochrome image for testing during the calibration process according to the control of the color processing unit 12. Each of the displayed monochrome images includes an output color. Each monochrome image includes one of various colors supported by the color gamut of the display device 3a; in other words, the output color of each monochrome image corresponds to a color parameter of the display device 3a, for example, the display device 3a sequentially outputs The output color of the three primary colors R, G, and B is a monochrome image, and the color parameter of each monochrome image can be the RGB value of the output color corresponding to the monochrome image, and the range can be from (0, 0, 0) to (255, 255, 255).

The image receiving unit 10 is for receiving a monochrome image output by the display device 3a and penetrating the monochrome lens 20 that is in close contact with the display device 3a. After the monochromatic image outputted by the display device 3a passes through the colored monochromatic lens 20, its brightness and even the color are changed by the color of the lens of the monochromatic lens 20, thereby forming a representation color different from the original output color. For example, the output color of one frame of the monochrome image output by the display device 3a is pink, and the color of the lens for correcting the color is dark blue, and the image received by the image receiving unit 10 via the monochrome lens 20 is presented. A low-brightness expression, such as dark purple. The image receiving unit 10 receives the above-described monochrome image that passes through the monochrome lens to change the brightness or simultaneously changes the brightness and color, and transmits it to the color processing unit 12.

The brightness analyzing unit 120 of the color processing unit 12 is coupled to the image receiving unit 10 for receiving and analyzing the brightness information of the color of each monochrome image whose brightness is changed, so as to obtain an extreme value from all the brightness information. And determining a color parameter of an output color of the original monochrome image corresponding to the extreme value as a target parameter. When the output color of the monochrome image outputted by the display device 3a is closer to the color of the monochrome lens 20, the higher the transmittance of the color presented by the monochrome image to the monochrome lens 20, the image receiving unit 10 receives. The greater the brightness value. On the contrary, when the color of the monochrome image and the color of the monochrome lens 20 are closer to the complementary color, the image received by the image receiving unit 10 is closer to black due to the color of the monochrome image superimposed on the color of the monochrome lens 20. The brightness value is also smaller.

After receiving the plurality of images from the image receiving unit 10, the brightness analyzing unit 120 can analyze the brightness values of the images, and determine an extreme value, such as a maximum brightness value or a minimum brightness value, from among all the brightness values. As described above, when the luminance value is larger, the output color of the monochrome image outputted by the display device 3a is closer to the lens color of the monochrome lens 20, and the lower the luminance, the monochrome color output by the display device 3a. The image output color and the monochromatic lens 20 are less similar to each other. In this example, the luminance analysis unit 120 determines the maximum luminance value from among a plurality of luminance values.

When the brightness analysis unit 120 analyzes the maximum brightness value according to the brightness information of the plurality of images transmitted by the image receiving unit 10, it can be known that the output color and the monochrome color of the monochrome image corresponding to the maximum brightness value are The lenses of the lens 20 are of the same color. For example, the color parameter corresponding to the output color for the large luminance value is (250, 0, 255), that is, the color of the monochrome lens 20 is the same as the color of (250, 0, 255) in the display device 3a. The brightness analysis unit 120 determines the color parameter (250, 0, 255) of the same color as the monochrome lens as the target parameter, and transmits it to the color control unit 122 to facilitate the subsequent correction process.

The color control unit 122 performs color conversion (color conversion) operation according to the target parameter and the preset color parameter transmitted by the data receiving unit 16, and generates a color conversion relationship M according to the result of the operation, and the color new component is equal to the color. The conversion relationship is multiplied by the original color component to convert the color space, for example:

Where R, G, and B represent the red, green, and blue components, respectively, R _new , G _{new ,} and B _new represent the hue coordinates after the three-color component conversion, and R _old , G _{old ,} and B _old represent the three color components respectively. The hue coordinates before conversion, and m ₁₁ to m ₃₃ are conversion matrix element values. In order to obtain the color conversion relationship M, one of the methods can perform three different color projections and measure the apparent value of the process, and then a total of nine equations can be obtained, and then a linear simultaneous equation solution can be obtained (such as Gauss-Joden elimination method). The element values of 9 variables such as m ₁₁ to m ₃₃ can be calculated separately.

For example, the projection color preset color parameters received by the color control unit 122 are red (255, 0, 0), green (0, 255, 0), and blue (0, 0, 255), respectively, and are analyzed by the brightness analyzing unit 120. The target parameters determined are magenta (255,0,255), light green (0,230,0) and water blue (20,20,225), and the above three sets of corresponding points can be generated by the calculation of the color control unit 122. The color conversion relationship M ₁ indicates that the relationship between the target parameter and the preset color parameter is as follows:

In other words, the color conversion relationship can be used to convert the preset color parameter red (255, 0, 0) into the target parameter magenta (255, 0, 255) through the aforementioned conversion formula 1. After the color control unit 122 calculates the color conversion relationship of the color correspondence between the monochrome lens 20 and the display device 3a, the color conversion relationship is transmitted to the signal control unit 124.

In order to make the image output by the display device 3a, the color of the image can match the monochrome lens 20. The signal control unit 124 converts the color conversion relationship into a control signal, and transmits the control signal to the display driving of the display device 3a. Unit 30. The display driving unit 30 is configured to control the display device 3a to output a corresponding image according to the color information in the stereoscopic image. After the display driving unit 30 receives the control signal, the control signal is restored to a color conversion relationship, and each color parameter in the color gamut supported by the display device 3a is respectively corresponding to the single color using the color conversion relationship according to the color conversion relationship. The color lens 20 matches another color. Thereby, when the color information in the stereoscopic image received by the display driving unit 30 is red (255, 0, 0), the actual output is magenta (255, 0, 255) corresponding to the color of the monochrome lens 20, and other colors. Correspondingly, the color of the stereoscopic image output by the display device 3a matches the lens color of the bi-color glasses 2. In other words, the color output parameters of the display device 3a (e.g., the intensity of RGB) will match the output of the display device 3a with the lens color of the bi-color glasses 2 by a one-time adjustment of the control signal.

It is worth mentioning that, after the correction of the other monochromatic lens 20 of the bicolor glasses 2, the color conversion relationship of the corresponding relationship between the color parameters of the other monochromatic lens 20 and the display device 3a can be calculated by the same means as described above. Then, the signal control unit 124 transmits another control signal to the display driving unit 30, and performs color conversion on the color parameters of the image used for the other monochrome lens 20 in the stereo image to make the stereo image. The left and right viewing angle images can all conform to the color output of the lens color of the two-color glasses 2, so that the user can obtain the best stereoscopic effect when viewing the stereoscopic image displayed by the display device 3a through the bicolor glasses 2.

[Another embodiment of image color correction system]

4 is a block diagram of another embodiment of an image color correction system 1a according to the present invention. The difference between the embodiment of FIG. 4 and the embodiment shown in FIG. 3 is that the color processing unit 12a of the present example includes a brightness analysis unit 120, a color control unit 122, and an image conversion unit 126.

The image conversion unit 126 is configured to receive the color conversion relationship calculated by the color control unit 122 and the stereoscopic image to be output to the display device 3; the stereoscopic image includes two monochromatic lenses 20 respectively corresponding to the bichromatic glasses 2 Two image channels, each image channel includes a plurality of pixel color data. The image conversion unit 126 can convert the image channel pixel color data corresponding to the monochrome lens 20 currently used to correct the color in the stereo image according to the color conversion relationship determined by the color control unit 122 (for example, according to the left eyeglass lens) The color corrects the pixel color data of the left channel image to match the color of the two image channels of the converted stereo image with the corresponding lens colors.

The image conversion unit 126 transmits the converted pixel color data to the display device 3 for the display device 3 to output the converted stereo image. That is to say, the image color correction system 1a directly converts the stereoscopic image to be displayed by the display device 3 into a color matching the bi-color glasses 2 through the color processing unit 12a, and then transmits the image to the display device 3 for output display.

The difference between the embodiment and the embodiment shown in FIG. 3 is that the image conversion unit 126 directly converts the stereo image signal value to be displayed as the output signal value; that is, all the input stereo image signal values can be used. After the color conversion operation, a new signal value matching the monochrome lens 20 is generated and output to the display device 3. The display device 3 does not need to change the internal setting of the display driving unit for the output of the stereoscopic image, and outputs the color-converted stereoscopic image and the output of the generally uncolor-converted image to the display device 3, in processing There is no difference in the program, which reduces the burden on the display driving unit. When the user wants to view the general video image after viewing the stereoscopic image, it is not necessary to control the display device 3 to resume the change setting.

In addition, the starting unit 14 in this example is coupled to the brightness analyzing unit 120. Therefore, the image receiving unit 10 of the image color correction system 1a can receive the external image arbitrarily, but only after the activation unit 14 generates and transmits a signal to the brightness analyzing unit 120 according to the user's pressing, the brightness analyzing unit 120 performs the image. Brightness information analysis. Thereby, the image receiving unit 10 can still receive external images for other video operations when the image color correction system 1a is not in operation.

[Image Color Correction System Still Another Embodiment]

FIG. 5 is a block diagram of another embodiment of an image color correction system 1b according to the present invention. Please refer to the block diagram shown in FIG. 3 to understand the contents of the embodiment.

The color processing unit 12b in this example includes a brightness analysis unit 120 and a signal control unit 124. The image color correction system 1b controls the display device 3a to sequentially output monochrome images corresponding to different gamma values. Therefore, each monochrome image includes a specific color parameter (ie, a hue value), and correspondingly To different gamma values. When the gamma value applied to the display driving unit 30 is larger, the image can display more layers of dark portions. Conversely, when the gamma value is smaller, the image can display more layers of bright portions.

Even if the hue value (RGB value) of the monochrome image does not change, when the same monochrome image corresponds to a different gamma value, the screen output from the display device 3a has a different degree of shading. For example, when the display driving unit 30 controls the gamma value to change from large to small, and the display device 3a outputs a red image corresponding to the gamma value, the color of the image is gradually changed from high-brightness red to low-brightness dark. red.

The display device 3a sequentially outputs a plurality of monochrome images corresponding to different gamma values, and penetrates one of the monochromatic lenses 20 of the bi-color glasses 2, and then receives the signals of the images by the image receiving unit 10. The activation unit 14 is configured to activate the image receiving unit 10 to enable the image receiving unit 10 to start receiving image signals penetrating the monochrome lens 20.

The brightness analyzing unit 120 is coupled to the image receiving unit 10 for analyzing the brightness information in the image signal received by the image receiving unit 10, and selecting the maximum brightness value from the brightness information corresponding to the plurality of monochrome images. And determine the gamma value corresponding to the maximum brightness value as the target parameter.

When the brightness information of one of the specific monochrome images outputted by the display device 3a is analyzed by the brightness analyzing unit 120 as the maximum brightness value, the specific monochrome image is combined with the color parameter and the gamma value displayed by the specific monochrome image, and The color of the lens of the monochromatic lens 20 is the closest or the same, so that the brightness thereof is completely shielded from the color of the lens and can completely penetrate the monochromatic lens 20. Thereby, the color of the lens of the monochromatic lens 20 can be known by using information such as color parameters and target parameters for identifying the monochrome image.

The signal control unit 124 is configured to convert the color parameter and the target parameter into a control signal, and transmit the control signal to the display device 3a, so that the display driving unit 30 of the display device 3a unlocks the control signal to convert the target parameter and the color parameter. And correcting the gamma value applicable when the display device 3a outputs the corresponding color parameter according to the target parameter as the correction value. Other parts that are the same as those of the embodiment shown in FIG. 3 are not repeated.

[Image color correction method embodiment]

FIG. 6 is a flow chart showing an embodiment of an image color correction method according to the present invention. Please refer to the block diagram shown in FIG. The image color correction system 1 can first receive a preset color parameter (S601) through the data receiving unit 16, for example, the lens color of one of the pair of bi-color glasses 2, which is a monochrome lens 20, which is visually observed by the user. Then, the image receiving unit 10 receives the image information of the plurality of monochrome images that penetrate the monochrome lens 20 (S603), wherein each of the monochrome images is displayed by the display device 3a for outputting the stereoscopic image. The output color of each monochrome image corresponds to a color parameter, such as a hue value (RGB value) in the color gamut supported by the display device 3a.

The brightness analyzing unit 120 of the color processing unit 12 is coupled to the image receiving unit 10, and the brightness analyzing unit 120 can sequentially analyze the brightness information of the image information transmitted by the image receiving unit 10, that is, the brightness information of the color, to An extreme value is obtained in the brightness information (S605), and the extreme value may be the maximum brightness value or the minimum brightness value. The reason for selecting the maximum brightness value or the minimum brightness value is as described above. After the extreme value in the brightness information is obtained by analysis, the brightness analyzing unit 120 may select a color parameter of the monochrome image corresponding to the extreme value, and determine the color parameter as a target parameter (S607).

Then, the color control unit 122 can perform operation according to the pre-set set color parameter and the target parameter to generate a color conversion relationship (S609); when the preset color parameter is applied with the color conversion relationship, the effect of converting to the target parameter can be generated. . Then, the signal control unit 124 encodes the color conversion relationship into a control signal, and then transmits it to the display driving unit 30 of the display device 3a (S611), so that after the display driving unit 30 unlocks the control signal, the display device 3a supports the display device 3a. Each RGB value in the color gamut is converted according to the color conversion relationship (S613), and the effect of converting the preset color parameter into the target parameter is generated, so that when the display device 3a outputs the stereoscopic image, the color and the two-color glasses 2 are presented. The colors of the lenses are matched with each other, and the method of using the hardware control is adopted to prevent the color of the stereoscopic image from being inconsistent with the color of the two-color glasses 2, thereby causing the image to overlap and the like, so that the user can obtain a good stereoscopic view when viewing the stereoscopic image.

It is worth mentioning that, for the correction of the other monochromatic lens 20 of the bi-color glasses 2, the image color correction system 1 can take the target color obtained in the above step S607 as the standard, and directly use the complementary color of the target parameter as the Another target parameter to which the monochromatic lens 20 is applied, and the control color control unit 122 directly generates a color conversion relationship corresponding to the other monochromatic lens 20 with the complementary color of the preset color parameter and the target parameter of the other monochromatic lens 20. . In other embodiments, the image colors of the two image channels in the stereo image may be separately processed in two ways, that is, the images of the left and right views are processed separately to obtain the images respectively. Corresponding lens colors match each other.

[Another Embodiment of Image Color Correction Method]

FIG. 7 is a flow chart showing another embodiment of an image color correction method according to the present invention. Please refer to the block diagram shown in FIG. The image color correction system 1a can receive a preset color parameter through the data receiving unit 16 (S701), and then receive image information of the plurality of monochrome images that penetrate the monochrome lens 20 by the image receiving unit 10 (S703). Each monochrome image is output by the display device 3 for outputting the stereo image, and the output color of each monochrome image corresponds to a color parameter, such as the RGB value of the monochrome image, and is penetrated The color lens 20 is presented in a presentation color.

The brightness analysis unit 120 sequentially analyzes the brightness information of the image information (ie, the expression color) transmitted by the image receiving unit 10 to obtain an extreme value from the plurality of brightness information (S705), and the extreme value may be the maximum brightness. Value or minimum brightness value. Then, the color parameter of the monochrome image corresponding to the extreme value is selected, and the color parameter is determined as a target parameter (S707).

The color control unit 122 further performs an operation according to the preset color parameter and the target parameter to generate a color conversion relationship (S709); and when the preset color parameter applies the color conversion relationship, the target parameter can be converted.

In this example, the difference from the flow shown in FIG. 6 is that, in this example, the image conversion unit 126 receives a plurality of image color data of the stereoscopic image that the user wants to view (S711), and then images each of the stereoscopic images. The color data, that is, the color matrix of each pixel in the image, directly converts the color portion of the stereo image by using the color conversion relationship (S713), and finally transmits the image data of the converted stereo image to the display device 3 (S715) The display device 3 can directly output the converted stereoscopic image without adjusting any settings, and achieve the effect of matching the color with the bi-color glasses, thereby providing the user with a good viewing experience.

It should be noted that, if the two-color glasses 2 have manufacturing errors such that the two monochromatic lenses 20 are not complementary to each other, the embodiment can also automatically detect the mutual interference of the stereoscopic images before the display device outputs the stereo images. Color components, and the color that interferes with each other is removed, so that the stereo effect is not lost due to image overlap. For one of the means of implementation, please refer to the flowchart of the error detection embodiment shown in FIG.

In the present embodiment, the two monochromatic lenses 20 are respectively detected according to the steps S701 to S707 described above to find two target parameters respectively corresponding to the two monochromatic lenses 20 (S801). For example, the target parameter of one of the monochromatic lenses 20 is found to be (255, 255, 0) (yellow), and the target parameter of the other monochromatic lens 20 is (0, 255, 255) (cyan). The color processing unit 12a compares the two target parameters analyzed to find a color component that interferes with each other between the two monochrome lenses 20 (S803). In this case, the R, G, and B values corresponding to the two target parameters should be 255, and the two target parameters will be complement each other. In this example, the added R, In the G and B values, the G value exceeds 255, so it can be judged that the color component that causes the left and right eye images to be completely isolated in this example is (0, 255, 0) (green).

After the color processing unit 12a analyzes the color component causing the interference, the content value of the input two channel image signals may be corrected according to the color component of the interference, and the color component causing the interference is removed (S805). In this example, the green information of one of the channel images can be eliminated or suppressed. Finally, the two converted and corrected image signals are transmitted to the display device 3 for display (S807). In this way, the interference of the two channels of images can be eliminated, and the quality of the stereoscopic information is not affected by the lack of production of the two-color lens.

FIG. 9 further provides a flowchart of an embodiment of an image color correction method. Please refer to the block diagram shown in FIG. 5 together. First, the image receiving unit 10 receives information of a plurality of monochrome images penetrating through one of the monochromatic lenses 20 of the two-color glasses 2 (S901); each of the monochrome images includes a color parameter and a specific gamma value. Then, the brightness analysis unit 120 analyzes the brightness information of each image information received by the image receiving unit 10 to obtain an extreme value from the brightness information (S903), for example, a maximum brightness value analyzed by the brightness analyzing unit 120. And determining that the gamma value of the monochrome image corresponding to the extreme value is a target parameter (S905).

The signal control unit 124 generates a control signal according to the target parameter and the color parameter and outputs it to the display driving unit 30 of the display device 3a (S907). Finally, the display driving unit adjusts the gamma of the color parameter according to the target parameter indicated by the control signal. The value (S909) causes the display device 3a to output a stereoscopic image color that matches the two-color glasses.

According to the description of the above embodiments, the color space of each display device can be automatically adjusted to match the used two-color glasses, so that the stereoscopic image viewer can view the correct stereoscopic image using the self-made two-color glasses. Therefore, the requirements for bi-color glasses will no longer be limited, increasing the chance for users to make bi-color glasses according to their needs. At the same time, it is not necessary to use expensive image color correction equipment and professional correction technology and knowledge to achieve good correction results.

However, the elements and steps of the above-described embodiments are merely illustrative of the invention and are not intended to limit the scope of the claimed invention. It is also within the scope of the present invention to modify or modify the micro-frames in accordance with the spirit of the present invention and the technical means disclosed herein.

1,1a-1b. . . Image color correction system

10. . . Image receiving unit

12,12a-12b. . . Color processing unit

120. . . Brightness analysis unit

122. . . Color control unit

124. . . Signal control unit

126. . . Image conversion unit

14. . . Startup unit

16. . . Data receiving unit

2. . . Bicolor glasses

20. . . Monochrome lens

3. . . Display device

30. . . Display drive unit

4. . . Set-top box

S601-S613. . . Flow chart step description

S701-S715. . . Flow chart step description

S801-S807. . . Flow chart step description

S901-S909. . . Flow chart step description

FIG. 1 is a schematic diagram of an embodiment of an image color correction system provided by the present invention; FIG.

2 is a schematic diagram of another embodiment of an image color correction system provided by the present invention;

3 is a block diagram of an embodiment of an image color correction system provided by the present invention;

4 is a block diagram of another embodiment of an image color correction system provided by the present invention;

FIG. 5 is a block diagram of still another embodiment of an image color correction system provided by the present invention; FIG.

6 is a flow chart of an embodiment of an image color correction method provided by the present invention;

7 is a flow chart of another embodiment of an image color correction method provided by the present invention;

8 is a flow chart of an embodiment of an error detection method provided by the present invention; and

FIG. 9 is a flow chart of still another embodiment of an image color correction method provided by the present invention.

1. . . Image color correction system

10. . . Image receiving unit

12. . . Color processing unit

2. . . Bicolor glasses

20. . . Monochrome lens

3. . . Display device

4. . . Set-top box

Claims (23)

An image color correction method is applicable to a stereoscopic image that exhibits a stereoscopic effect through two-color glasses. The bi-color glasses include two monochromatic lenses, each of which has a lens color, and the stereoscopic image includes two image channels. A pair of pairs of monochromatic lenses should be respectively arranged, the method comprising: sequentially receiving output colors corresponding to the plurality of monochrome images output by a display device, wherein the output colors are respectively corresponding to the display device a plurality of color parameters; analyzing a brightness information of one of the display colors displayed after each of the monochrome images passes through one of the monochrome lenses to obtain one of the extreme values corresponding to one of the brightness information And determining a color image of the monochrome image corresponding to the extreme value as a target parameter; obtaining a color conversion relationship according to the target parameter and a preset color parameter, wherein the preset color parameter is Converting the color conversion relationship to the target parameter; and performing color conversion according to the color conversion relationship to obtain the image channel corresponding to the monochrome lens Like the color performance of color, whereby the color of the image so that the image channel to match the color of the lens. The image color correction method of claim 1, wherein the step of performing color conversion according to the color conversion relationship further comprises: selecting another monochromatic lens of the bicolor glasses, and returning to receive by the display device The step of outputting the plurality of monochrome images is performed until the image color of the other image channel of the stereo image matches the lens color of the other monochromatic lens. The image color correction method of claim 2, wherein the step of performing color conversion according to the color conversion relationship comprises: outputting a control signal to one of the display driving units according to the color conversion relationship; and The display driving unit adjusts the color parameters of the image channel according to the color conversion relationship. The image color correction method of claim 2, wherein the step of performing color conversion according to the color conversion relationship comprises: receiving a plurality of pixel color data of the image channel; and converting the color conversion relationship one by one according to the color conversion relationship The pixel color data is a corresponding performance color; and the converted pixel color data is transmitted to the display device. The image color correction method of claim 4, wherein after the step of matching the image color of the other image channel of the stereo image with the color of the lens of the other monochromatic lens, the method further comprises: identifying the image color And an interference color component between the target parameters corresponding to the monochromatic lenses; and selecting one of the image channels, and removing the interference color component from the image color corresponding to the selected image channel. The image color correction method of claim 2, wherein the color parameter is a hue value, and the extreme value is a maximum brightness value or a minimum brightness value, wherein when the extreme value is the maximum brightness value, the The target parameter is the same color as the lens of the monochrome lens penetrated by the monochrome image. When the extreme value is the minimum brightness value, the target parameter and the lens of the monochrome lens penetrated by the monochrome image Colors complement each other. The image color correction method of claim 2, wherein before receiving the monochrome images, the method further comprises: receiving the preset color parameter; and receiving an activation signal to control an image receiving unit to start. The monochrome images are sequentially received. The image color correction method of claim 2, wherein before analyzing the brightness information, the method further comprises: receiving the preset color parameter; and receiving an activation signal to control a brightness analysis unit to start analyzing each The monochromatic image penetrates the brightness information after the monochromatic lens. An image color correction method is applicable to a stereoscopic image that exhibits a stereoscopic effect through two-color glasses. The bi-color glasses include two monochromatic lenses, each of which has a lens color respectively, including: sequentially receiving by a display device Outputting and penetrating a plurality of monochromatic images of one of the monochromatic lenses, the monochromatic images one-to-one corresponding to a plurality of gamma values of a color parameter; analyzing each of the monochromatic images after penetrating the monochromatic lens a brightness information to obtain one of the monochrome images corresponding to one of the extreme values of the brightness information; determining the gamma value of the monochrome image corresponding to the extreme value as a target parameter; The parameter and the color parameter output a control signal to a display driving unit of the display device; and the display driving unit adjusts the gamma value of the color parameter of the display device according to the target parameter, so that the display device outputs The color of the stereoscopic image matches the color of the lenses of the two-color lens. The image color correction method according to claim 9, wherein the extreme value is a maximum brightness value, and the color of the monochrome image corresponding to the maximum brightness value and the single image penetrated by the monochrome image The lenses of the color lenses are the same color. The image color correction method of claim 9, wherein before receiving the monochrome images sequentially, the method further comprises: receiving the preset color parameter; and receiving an activation signal to control an image receiving unit to start The monochrome images are sequentially received. The image color correction method of claim 9, wherein before analyzing the brightness information, the method further comprises: receiving the preset color parameter; and receiving an activation signal to control a brightness analysis unit to start analyzing each The monochromatic image penetrates the brightness information after the monochromatic lens. An image color correction system is coupled to a display device for correcting a color of a stereoscopic image that exhibits a stereoscopic effect through a pair of color glasses, the bicolor lens comprising two monochromatic lenses, each of the monochromatic lenses having a lens color, respectively An image receiving unit receives a plurality of monochrome images output by the display device and penetrating one of the monochrome lenses, each of the monochrome images including an output color, each of the output colors penetrating the single The color lens displays a corresponding color, and the output color corresponds to a color parameter of the device; a color processing unit includes: a brightness analyzing unit coupled to the image receiving unit for analyzing one of the colores Brightness information to obtain an extreme value in the brightness information, and determining that the color parameter corresponding to the extreme value is a target parameter; and a color control unit that generates a color conversion according to the target parameter and a preset color parameter a relationship, wherein the preset color parameter is converted into the target parameter according to the color conversion relationship; wherein the stereoscopic image output by the display device Colors, lines after conversion of the color of the color conversion relationship, whereby the color of the stereoscopic image to match the color of the color of those glasses lens. The image color correction system of claim 13, wherein the color processing unit further comprises: a signal control unit, converting the color conversion relationship into a control signal, and transmitting the control signal to the display device; The display driving unit of the display device converts the control signal into the color conversion relationship, and converts each of the color parameters of the display device according to the color conversion relationship. The image color correction system of claim 13, wherein the color processing unit further comprises: an image conversion unit coupled to the color control unit, wherein the image conversion unit is configured to receive a plurality of pixels of the stereo image Color data, and converting the pixel color data of the stereo image to a corresponding performance color according to the color conversion relationship, so that the color of the converted stereo image matches the lens color of the bi-color glasses; The image conversion unit transmits the pixel color data converted into the corresponding expression color to the display device, so that the display device outputs the converted stereo image. The image color correction system of claim 13, wherein the extreme value is a maximum brightness value or a minimum brightness value of the brightness information. The image color correction system of claim 16, wherein the color parameter is a hue value, the target parameter corresponding to the maximum brightness value, and the lens color of the monochromatic lens penetrated by the monochrome image. Similarly, the target color corresponding to the minimum brightness value participates in the color of the lens of the monochrome lens penetrated by the monochrome image as complementary color. The image color correction system of claim 13 further comprising: an activation unit coupled to the image receiving unit for controlling an image to be received by the image receiving unit according to the operation to generate an activation signal Color image. The image color correction system of claim 13, further comprising: an activation unit coupled to the brightness analysis unit for generating an activation signal according to the operation, and controlling the brightness analysis unit to start analyzing the orders The brightness information of the color image. An image color correction system is coupled to a display device for correcting a color of a stereoscopic image that exhibits a stereoscopic effect through a pair of color glasses, the bicolor lens comprising two monochromatic lenses, each of the monochromatic lenses having a lens color, including An image receiving unit receives a plurality of monochrome images output by the display device and penetrating one of the monochrome lenses, the monochrome images corresponding to a plurality of gamma values of a color parameter; a color processing The unit includes: a brightness analyzing unit coupled to the image receiving unit for analyzing brightness information of each of the monochrome images after the monochrome lens is obtained to obtain an extreme value of the brightness information, And determining that the gamma value corresponding to the extreme value is a target parameter; and a signal control unit converting the target parameter and the color parameter into a control signal, and transmitting the control signal to the display device; wherein the display a display driving unit of the device converts the control signal into the target parameter and the color parameter, and adjusts the color parameter of the display device according to the target parameter The gamma value. The image color correction system of claim 20, wherein the extreme value is a maximum brightness value of the brightness information. The image color correction system of claim 20, further comprising: an activation unit coupled to the image receiving unit, configured to generate an activation signal according to the operation, and control the image receiving unit to start receiving the order Color image. The image color correction system of claim 20, further comprising: an activation unit coupled to the brightness analysis unit for generating an activation signal according to the operation, and controlling the brightness analysis unit to start analyzing the orders The brightness information of the color image.