Image processing circuit and image processing method
The image processing circuit uses multiple lookup tables and magnification values to calculate the output image data, which solves the problem that a single lookup table cannot adapt to the starting voltage range of different light emitting elements, and achieves better overdrive effect and display device performance improvement.
Patent Information
- Application Number
- CN202110162649.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2020-12-15
- Filing Date
- 2021-02-05
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2041-02-05
AI Technical Summary
In the prior art, a single lookup table is difficult to adapt to the individual starting voltage ranges of different light emitting elements in the display device, resulting in poor overdrive effect.
Design an image processing circuit, generates a second offset value based on the starting voltage range of the light emitting element through multiple lookup tables, and combines the end grayscale value and magnification value to calculate the output image data to overdrive the light emitting element, which is suitable for different The grayscale value of the frame changes.
It achieves better overdrive effect, improves the performance of the display device, adapts to the characteristics of different light-emitting elements, and improves reaction time and brightness control.
Smart Images
Figure CN114387910B_ABST
Abstract
Description
Technical Field
[0001] The embodiments described in this disclosure relate to image processing technology, and more particularly to an image processing circuit and an image processing method. Background Art
[0002] With technological advancements, overdrive drivers are often applied to images to speed up the response time of display devices. In some related technologies, a single lookup table is used to overdrive all light-emitting elements in a display device. However, this single lookup table may not be suitable for some light-emitting elements in the display device. Summary of the Invention
[0003] Some embodiments of the present disclosure relate to an image processing circuit. The image processing circuit is configured to generate a second offset value based on a plurality of first offset values in a lookup table. The lookup table corresponds to a range of starting voltages for at least one light-emitting element in a display device. The image processing circuit is further configured to generate output image data based on an ending grayscale value and the second offset value. The output image data is used to overdrive the at least one light-emitting element. The first offset values correspond to a starting grayscale value for a first frame and an ending grayscale value for a second frame.
[0004] In some embodiments, the starting voltage is a minimum turn-on voltage of at least one light-emitting element.
[0005] In some embodiments, the image processing circuit is further configured to generate the second offset values based on an interpolation process performed on the first offset values.
[0006] In some embodiments, if the ending grayscale value is greater than the starting grayscale value, the image processing circuit generates output image data based on a sum of the ending grayscale value and the second offset value. If the ending grayscale value is less than the starting grayscale value, the image processing circuit generates output image data based on a difference between the ending grayscale value and the second offset value.
[0007] In some embodiments, the image processing circuit is further configured to generate a processed offset value based on a product of the second offset value and at least one magnification value, and generate output image data based on the end grayscale value and the processed offset value. The at least one magnification value corresponds to at least one light emitting element.
[0008] In some embodiments, at least one magnification value is a load value, and the load value includes at least one product, wherein the at least one product is a product of a representative value and a representative ratio, wherein the representative value and the representative ratio are related to at least one light-emitting element.
[0009] In some embodiments, based on the range of the starting voltage of at least one light-emitting element, the representative value is a characteristic value of at least one light-emitting element, an average of multiple characteristic values of a row of light-emitting elements, or an average of multiple characteristic values of a block of light-emitting elements.
[0010] In some embodiments, the characteristic value or each of the characteristic values is a grayscale value, a saturation value, a hue value, a brightness value, a driving voltage value, or a driving current value.
[0011] In some embodiments, the load value is an accumulated value of a plurality of products, and each of the products is a product of a representative value and a representative ratio. The representative value and the representative ratio are related to a plurality of light-emitting elements.
[0012] In some embodiments, at least one magnification value represents a device brightness value, an operating temperature, or a frame rate of at least one light-emitting element.
[0013] Some embodiments of the present disclosure relate to an image processing method. The method includes generating a second offset value based on a plurality of first offset values in a lookup table, wherein the lookup table corresponds to a range of starting voltages of at least one light-emitting element in a display device; and generating output image data to overdrive the at least one light-emitting element based on an ending grayscale value and the second offset value. The first offset values correspond to a starting grayscale value of a first frame and an ending grayscale value of a second frame.
[0014] In some embodiments, the starting voltage is a minimum turn-on voltage of at least one light-emitting element.
[0015] In some embodiments, the image processing method further includes: generating second offset values according to an interpolation process performed on the first offset values.
[0016] In some embodiments, the image processing method further includes: if the ending grayscale value is greater than the starting grayscale value, generating output image data according to a sum of the ending grayscale value and the second offset value; and if the ending grayscale value is less than the starting grayscale value, generating output image data according to a difference between the ending grayscale value and the second offset value.
[0017] In some embodiments, the image processing method further includes: generating a processed offset value based on a product of the second offset value and at least one magnification value, wherein the at least one magnification value corresponds to at least one light-emitting element; and generating output image data based on the end grayscale value and the processed offset value.
[0018] In some embodiments, at least one magnification value is a load value, and the load value includes at least one product, wherein the at least one product is a product of a representative value and a representative ratio, wherein the representative value and the representative ratio are related to at least one light-emitting element.
[0019] In some embodiments, based on the range of the starting voltage of at least one light-emitting element, the representative value is a characteristic value of at least one light-emitting element, an average of multiple characteristic values of a row of light-emitting elements, or an average of multiple characteristic values of a block of light-emitting elements.
[0020] In some embodiments, the characteristic value or each of the characteristic values is a grayscale value, a saturation value, a hue value, a brightness value, a driving voltage value, or a driving current value.
[0021] In some embodiments, the load value is an accumulated value of a plurality of products, and each of the products is a product of a representative value and a representative ratio. The representative value and the representative ratio are related to a plurality of light-emitting elements.
[0022] In some embodiments, at least one magnification value represents a device brightness value, an operating temperature, or a frame rate of at least one light-emitting element. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] To make the above and other objects, features, advantages and embodiments of the present disclosure more apparent, the accompanying drawings are described as follows:
[0024] Figure 1 is a schematic diagram of a display device according to some embodiments of the present disclosure;
[0025] Figure 2 is a flow chart of an image processing method according to some embodiments of the present disclosure;
[0026] Figure 3 is a schematic diagram illustrating the generation of output image data according to some embodiments of the present disclosure;
[0027] Figure 4 is a schematic diagram of a lookup table according to some embodiments of the present disclosure;
[0028] Figure 5 is a schematic diagram of a lookup table according to some embodiments of the present disclosure;
[0029] Figure 6 is a flow chart of an image processing method according to some embodiments of the present disclosure;
[0030] Figure 7 is a schematic diagram illustrating the generation of output image data according to some embodiments of the present disclosure;
[0031] Figure 8 is a schematic diagram illustrating a magnification value according to some embodiments of the present disclosure; and
[0032] Figure 9 FIG. 4 is a schematic diagram illustrating generating a load value according to some embodiments of the present disclosure.
[0033]
Explanation of symbols
[0034] 100: Display device
[0035] 120: Image processing circuit
[0036] 140: Display Array
[0037] 160: Buffer
[0038] 200,600: Image processing methods
[0039] IN: Input image data
[0040] SG, SG1, SG2: starting grayscale value
[0041] EG, EG1, EG2: End grayscale value
[0042] OUT: Output image data
[0043] OUTG: Output grayscale value
[0044] OFFSET: offset value
[0045] LUT, LUT1: Lookup Table
[0046] OF1, OF2, OF3, OF4: original offset values
[0047] OFFSET': offset value after processing
[0048] S: magnification value
[0049] P: parameter
[0050] RV: Representative Value
[0051] RR: stands for ratio
[0052] LV: Load value
[0053] S210, S220, S230, S610, S620, S630, S640: Operation DETAILED DESCRIPTION
[0054] As used herein, the term “coupled” may also refer to “electrically coupled,” and the term “connected” may also refer to “electrically connected.” “Coupled” and “connected” may also refer to two or more elements cooperating or interacting with each other.
[0055] refer to Figure 1 . Figure 1 is a schematic diagram of a display device 100 according to some embodiments of the present disclosure. Figure 1 For example, the display device 100 includes an image processing circuit 120 , a display array 140 , and a buffer 160 .
[0056] The display array 140 is coupled to the image processing circuit 120. The display array 140 includes a plurality of light-emitting elements. Due to different material properties, different structures, different drivers, or other factors, the light-emitting elements may have different starting voltage ranges. In some embodiments, the starting voltage of a light-emitting element is the minimum on-state voltage of the light-emitting element. For example, the light-emitting elements include red organic light-emitting diodes, green organic light-emitting diodes, and blue organic light-emitting diodes. These different colored light-emitting diodes have different minimum on-state voltage ranges. In some embodiments, the minimum on-state voltage of the blue organic light-emitting diode is greater than the minimum on-state voltage of the red organic light-emitting diode, and the minimum on-state voltage of the red organic light-emitting diode is greater than the minimum on-state voltage of the green organic light-emitting diode.
[0057] It should be noted that the above-mentioned implementation methods of the light-emitting elements (eg, organic light-emitting diodes) are merely examples, and other types of light-emitting elements are within the scope of the present disclosure.
[0058] Buffer 160 is coupled to image processing circuit 120. Buffer 160 is configured to store multiple lookup tables (LUTs). These LUTs are used to drive light-emitting devices with different starting voltage ranges to accelerate the response time of these light-emitting devices. For example, buffer 160 stores three LUTs, one for each of red, green, and blue organic light-emitting diodes. Each LUT records multiple raw offset values. Each raw offset value is used to overdrive the corresponding light-emitting device when the light-emitting device transitions from a first frame to a second frame, and each raw offset value represents the amount of overdrive.
[0059] refer to Figure 2 . Figure 2 is a flow chart of an image processing method 200 according to some embodiments of the present disclosure. In some embodiments, the image processing method 200 is applied to Figure 1 The display device 100. Figure 2 For example, the image processing method 200 includes operations S210, S220, and S230. The image processing method 200 will be described in the following sections. Figure 1 Provide a description.
[0060] In operation S210 , the image processing circuit 120 receives input image data IN. The input image data IN includes a starting grayscale value SG of a first frame and an ending grayscale value EG of a second frame. In some embodiments, the starting grayscale value SG and the ending grayscale value EG may be stored in the buffer 160 .
[0061] In operation S220, the image processing circuit 120 is further configured to perform an interpolation process (e.g., a double interpolation process) based on a plurality of lookup tables LUT to generate one or more offset values OFFSET. For example, the image processing circuit 120 determines a plurality of original offset values in the lookup table LUT according to the starting grayscale value SG and the ending grayscale value EG. Then, the image processing circuit 120 performs an interpolation process (e.g., a double interpolation process) on these determined original offset values to generate the offset value OFFSET. How to perform the double interpolation process on these determined original offset values to generate the offset value OFFSET will be described in detail in the following paragraphs. Figure 4 as well as Figure 5 Provide a description.
[0062] In operation S230 , the image processing circuit 120 is further configured to execute an image processing procedure to generate output image data OUT. For example, the image processing circuit 120 generates an output grayscale value OUTG of the output image data OUT according to the end grayscale value EG and the offset value OFFSET.
[0063] refer to Figure 3 . Figure 3 FIG. 1 is a schematic diagram illustrating the generation of output image data OUT according to some embodiments of the present disclosure. Figure 3 For example, the image processing circuit 120 generates an output grayscale value OUTG for the output image data OUT based on the sum of the ending grayscale value EG and the offset value OFFSET, or the difference between the ending grayscale value EG and the offset value OFFSET. Specifically, if the ending grayscale value EG is greater than the starting grayscale value SG, the image processing circuit 120 adds the ending grayscale value EG and the offset value OFFSET to generate the output grayscale value OUTG. Conversely, if the ending grayscale value EG is less than the starting grayscale value SG, the image processing circuit 120 subtracts the ending grayscale value EG from the offset value OFFSET to generate the output grayscale value OUTG. The output image data OUT is used to overdrive the corresponding light-emitting element in the display array 140 to accelerate the response time of the light-emitting element or increase / decrease the brightness value.
[0064] As described above, how to perform a double interpolation process on these determined original offset values to generate the offset value OFFSET will be described in the following paragraphs. Figure 4 as well as Figure 5 Provide a description.
[0065] refer to Figure 4 . Figure 4Schematic diagram of the lookup table LUT1 according to some embodiments of the present disclosure. The lookup table LUT1 is applicable to a light-emitting element with a specific starting voltage range. Assume that the starting grayscale value SG is 1 and the ending grayscale value EG is 134. In other words, the image is switched from a dark frame to a bright frame. Based on this, a range covering the starting grayscale value SG(1) can be determined, and this range is between the two starting grayscale values SG1 and SG2. The two starting grayscale values SG1 and SG2 can be, for example, 0 and 32 respectively. Similarly, a range covering the ending grayscale value EG(134) can be determined, and this range is between the two ending grayscale values EG1 and EG2. The two ending grayscale values EG1 and EG2 can be, for example, 128 and 160 respectively. Based on the above two starting grayscale values SG1 and SG2 and the two ending grayscale values EG1 and EG2, four corresponding original offset values OF1-OF4 can be determined. Then, the parameters H1 and H2 can be obtained through the following formulas (1) and (2):
[0066]
[0067]
[0068] Then, the offset value OFFSET can be obtained through the following formula (3):
[0069]
[0070] Assuming that the starting grayscale value SG is 1 and the ending grayscale value EG is 134, the offset value OFFSET can be calculated based on the lookup table LUT1 and equations (1)-(3). The calculated offset value OFFSET is equal to 10.83. In addition, since this image transitions from a dark frame to a bright frame, the sign of the offset value OFFSET is determined to be positive. In other words, when the ending grayscale value EG is greater than the starting grayscale value SG, the sign of the offset value OFFSET is determined to be positive.
[0071] Equivalently, formula (1) and formula (2) are horizontal linear interpolation, while formula (3) is vertical linear interpolation. The above calculation process is called double interpolation procedure.
[0072] refer to Figure 5 . Figure 5Schematic diagram of the lookup table LUT1 according to some embodiments of the present disclosure. Assume that the starting grayscale value SG is 134 and the ending grayscale value EG is 1. In other words, the image is transitioning from a bright frame to a dark frame. Based on this, a range covering the starting grayscale value SG(134) can be determined, and this range is between the two starting grayscale values SG1 and SG2. The two starting grayscale values SG1 and SG2 can be, for example, 128 and 160, respectively. Similarly, a range covering the ending grayscale value EG(1) can be determined, and this range is between the two ending grayscale values EG1 and EG2. The two ending grayscale values EG1 and EG2 can be, for example, 0 and 32, respectively. Based on the above-mentioned two starting grayscale values SG1 and SG2 and the two ending grayscale values EG1 and EG2, four corresponding original offset values OF1-OF4 can be determined.
[0073] Assuming the starting grayscale value SG is 134 and the ending grayscale value EG is 1, the offset value OFFSET can be calculated based on the lookup table LUT1 and equations (1)-(3). The calculated offset value OFFSET is equal to 10.04. Furthermore, since this image transitions from a bright frame to a dark frame, the sign of the offset value OFFSET is determined to be negative. In other words, when the ending grayscale value EG is less than the starting grayscale value SG, the sign of the offset value OFFSET is determined to be negative.
[0074] refer to Figure 6 . Figure 6 is a flow chart of an image processing method 600 according to some embodiments of the present disclosure. In some embodiments, the image processing method 600 is applied to Figure 1 The display device 100. Figure 6 For example, the image processing method 600 includes operations S610, S620, S630, and S640. The image processing method 600 will be described in the following sections. Figure 1 Provide a description.
[0075] In operation S610 , the image processing circuit 120 is configured to receive input image data IN.
[0076] In operation S620, the image processing circuit 120 is further configured to perform an interpolation process (e.g., a double interpolation process) based on the multiple lookup tables (LUTs) to generate one or more offset values OFFSET. Since how the image processing circuit 120 performs the double interpolation process is similar to operation S220 and has been described in the above paragraphs, it will not be repeated here.
[0077] In operation S630 , the image processing circuit 120 is further configured to generate a processed offset value OFFSET′ according to the offset value OFFSET and at least one magnification value S.
[0078] refer to Figure 7 . Figure 7 FIG. 1 is a schematic diagram illustrating the generation of output image data OUT according to some embodiments of the present disclosure. Figure 7 For example, the image processing circuit 120 generates the processed offset value OFFSET′ by multiplying the offset value OFFSET by the magnification value S corresponding to at least one light emitting element.
[0079] refer to Figure 8 . Figure 8 is a schematic diagram illustrating the magnification value S according to some embodiments of the present disclosure. Figure 8 For example, the magnification value S may vary with the parameter P of the corresponding light emitting element. The parameter P may be, for example, the device brightness value (DBV), operating temperature, frame rate, or load value ( Figure 9 LV in ). In some embodiments, the multiplier value S is positively correlated with the parameter P. In some other embodiments, the multiplier value S is negatively correlated with the parameter P. In some other embodiments, the multiplier value S is a fixed value. In addition, the multiplier value S can be greater than 1, equal to 1, or less than 1. Figure 8 For example, the magnification value S corresponding to a specific parameter P can be obtained by Figure 8 The interpolation procedure is performed on the two nodes to calculate it.
[0080] In some embodiments, one or more light-emitting elements correspond to a plurality of magnification values S. Thus, in these embodiments, the image processing circuit 120 generates the processed offset value OFFSET′ by multiplying the offset value OFFSET by the magnification values S.
[0081] In some embodiments, the parameter P is the load value ( Figure 9 LV in ). Reference Figure 9 . Figure 9 is a schematic diagram illustrating the generation of a load value LV according to some embodiments of the present disclosure. First, Figure 1 The plurality of pixels in the display array 140 are grouped. Figure 9For example, the pixels are divided into 18 blocks. Each block corresponds to a representative value RV and a representative ratio RR. For example, assume that each block includes 16 (4 x 4) pixels, and each block includes multiple red organic light-emitting diodes, multiple green organic light-emitting diodes, and multiple blue organic light-emitting diodes. The representative value RV of the red organic light-emitting diodes (or the green organic light-emitting diodes, or the blue organic light-emitting diodes) within a block may be the average of the characteristic values of the red organic light-emitting diodes (or the green organic light-emitting diodes, or the blue organic light-emitting diodes). In some other embodiments, the representative value RV of the red organic light-emitting diodes (or the green organic light-emitting diodes, or the blue organic light-emitting diodes) within a block may be the maximum or minimum value of the characteristic values of the red organic light-emitting diodes (or the green organic light-emitting diodes, or the blue organic light-emitting diodes). In some embodiments, the characteristic value is a grayscale value, a saturation value, a hue value, a brightness value, a driving voltage value, or a driving current value. Next, the load values LV corresponding to the red OLEDs (or the green OLEDs, or the blue OLEDs) are the cumulative values of multiple products, each of which is the product of the representative values RV of the red OLEDs (or the green OLEDs, or the blue OLEDs) and the representative ratio RR. In other embodiments, the load values LV of the red OLEDs (or the green OLEDs, or the blue OLEDs) may be the maximum, minimum, or average of the aforementioned products. In some embodiments, the representative ratio RR may be adjusted before shipment and may be greater than 1, equal to 1, or less than 1. In other words, light-emitting elements within the same block but with different starting voltage ranges are processed separately. In some embodiments, the representative values RV and the load values LV may be stored in a buffer 160.
[0082] In some other embodiments, a cluster comprises a row of light-emitting elements. In some other embodiments, a cluster comprises only one light-emitting element. In embodiments where a cluster comprises a single light-emitting element, the representative value RV may be the characteristic value of the light-emitting element in that pixel. The generation of the load value LV in these other embodiments is similar to the description above and will not be repeated here. Compared to embodiments where a cluster comprises a single light-emitting element, embodiments where a cluster comprises a row or a block of light-emitting elements can reduce the number of representative values RV, thereby conserving storage space.
[0083] Reference again Figure 6 as well as Figure 7In operation S640, the image processing circuit 120 is further configured to execute an image processing procedure to generate output image data OUT. For example, the image processing circuit 120 generates the output grayscale value OUTG based on the ending grayscale value EG and the processed offset value OFFSET'. Since how the image processing circuit 120 executes the image processing procedure to generate the output image data OUT is similar to operation S230 and has been described in the previous paragraph, it will not be repeated here.
[0084] In some related arts, only one lookup table is used to overdrive all the light-emitting elements in the display device. However, this one lookup table may not be suitable for some of the light-emitting elements in the display device.
[0085] Compared to the aforementioned related technologies, in the present disclosure, the image processing circuit 120 performs image processing based on a lookup table (LUT) corresponding to the starting voltage range of the light-emitting device. In other words, light-emitting devices with different starting voltage ranges can be overdriven using different LUTs. This achieves a better overdrive effect and enhances the performance of the display device 100.
[0086] In summary, in the present disclosure, a better overdriving effect can be achieved, and the performance of the display device can be better.
[0087] Various functional elements and blocks have been disclosed herein. It will be understood by those skilled in the art that the functional blocks may be implemented by circuits (whether dedicated circuits or general-purpose circuits operating under the control of one or more processors and coded instructions), which generally include transistors or other circuit elements for controlling the operation of electrical circuits corresponding to the functions and operations described herein. It will be further understood that the specific structure and interconnection of circuit elements may generally be determined by a compiler, such as a Register Transfer Language (RTL) compiler. A RTL compiler operates on scripts, which are quite similar to assembly language code, and compiles the scripts into a form used to lay out or fabricate the final circuit.
[0088] Although the present disclosure has been disclosed above in the form of embodiments, it is not intended to limit the present disclosure. Anyone with ordinary knowledge in the art may make various changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the scope defined in the appended claims.
Claims
1. An image processing circuit, characterized in that: The image processing circuit is used to generate a second offset value according to a plurality of first offset values in one of a plurality of lookup tables, wherein the plurality of lookup tables respectively correspond to a plurality of light-emitting elements in a display device, and the plurality of light-emitting elements have a plurality of different starting voltage ranges, wherein the image processing circuit is further used to generate an output image data according to an end grayscale value and the second offset value, wherein the output image data is used to overdrive a corresponding one of the plurality of light-emitting elements, The first offset values correspond to a starting grayscale value of a first frame and an ending grayscale value of a second frame. wherein the image processing circuit is further configured to generate a processed offset value according to a product of the second offset value and at least one magnification value, and to generate the output image data according to the end grayscale value and the processed offset value, wherein the at least one magnification value corresponds to the corresponding one of the plurality of light emitting elements, The at least one magnification value is a load value, and the load value includes at least one product, and the at least one product is a product of a representative value and a representative ratio, wherein the representative value and the representative ratio are related to the corresponding one of the plurality of light-emitting elements.
2. The image processing circuit according to claim 1, characterized in that: The starting voltage is a minimum turn-on voltage of the corresponding one of the plurality of light emitting elements.
3. The image processing circuit according to claim 1, characterized in that: The image processing circuit is further configured to generate the second offset value according to an interpolation procedure performed on the plurality of first offset values.
4. The image processing circuit according to claim 1, characterized in that: If the ending grayscale value is greater than the starting grayscale value, the image processing circuit generates the output image data according to a sum of the ending grayscale value and the second offset value, and if the ending grayscale value is less than the starting grayscale value, the image processing circuit generates the output image data according to a difference between the ending grayscale value and the second offset value.
5. The image processing circuit according to claim 1, characterized in that: Wherein, based on the range of the starting voltage of the corresponding one of the plurality of light-emitting elements, the representative value is a characteristic value of the corresponding one of the plurality of light-emitting elements, an average value of multiple characteristic values of a row of light-emitting elements, or an average value of multiple characteristic values of a block of light-emitting elements.
6. The image processing circuit according to claim 5, characterized in that: The characteristic value or each of the plurality of characteristic values is a grayscale value, a saturation value, a hue value, a brightness value, a driving voltage value or a driving current value.
7. The image processing circuit according to claim 1, characterized in that: The load value is the cumulative value of multiple products.
8. The image processing circuit according to claim 1, characterized in that: The at least one magnification value represents a device brightness value, an operating temperature or a frame rate of the corresponding one of the plurality of light-emitting elements.
9. An image processing method, characterized in that: Include: generating a second offset value according to a plurality of first offset values in one of a plurality of lookup tables, wherein the plurality of lookup tables respectively correspond to a plurality of light-emitting elements in a display device, and the plurality of light-emitting elements have a plurality of different starting voltage ranges; and generating an output image data according to an end grayscale value and the second offset value to overdrive a corresponding one of the plurality of light emitting elements, The first offset values correspond to a starting grayscale value of a first frame and an ending grayscale value of a second frame. The image processing method further comprises: generating a processed offset value according to a product of the second offset value and at least one magnification value, wherein the at least one magnification value corresponds to the corresponding one of the plurality of light emitting elements; as well as generating the output image data according to the end grayscale value and the processed offset value, The at least one magnification value is a load value, and the load value includes at least one product, and the at least one product is a product of a representative value and a representative ratio, wherein the representative value and the representative ratio are related to the corresponding one of the plurality of light-emitting elements.
10. The image processing method according to claim 9, characterized in that: The starting voltage is a minimum turn-on voltage of the corresponding one of the plurality of light emitting elements.
11. The image processing method according to claim 9, characterized in that: Also includes: The second offset value is generated according to an interpolation process performed on the first offset values.
12. The image processing method according to claim 9, characterized in that: Also includes: If the end grayscale value is greater than the start grayscale value, generating the output image data according to a sum of the end grayscale value and the second offset value; and If the end grayscale value is less than the start grayscale value, the output image data is generated according to a difference between the end grayscale value and the second offset value.
13. The image processing method according to claim 9, characterized in that: Wherein, based on the range of the starting voltage of the corresponding one of the plurality of light-emitting elements, the representative value is a characteristic value of the corresponding one of the plurality of light-emitting elements, an average value of multiple characteristic values of a row of light-emitting elements, or an average value of multiple characteristic values of a block of light-emitting elements.
14. The image processing method according to claim 13, characterized in that: The characteristic value or each of the plurality of characteristic values is a grayscale value, a saturation value, a hue value, a brightness value, a driving voltage value or a driving current value.
15. The image processing method according to claim 9, characterized in that: The load value is the cumulative value of multiple products.
16. The image processing method according to claim 9, characterized in that: The at least one magnification value represents a device brightness value, an operating temperature or a frame rate of the corresponding one of the plurality of light-emitting elements.