Back to results
US 10,706,764 B2Granted
Method and device for correcting color deviation for bending region of curved screen
AssigneeWuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorsWei Wang, Yaojen Chang
Life of this patent
Estimating the term…
Abstract
First photographed images taken at a plurality of angles and brightness information of each of the first photographed images are obtained. According to the brightness information of each of the colors, a relational model is established. Second photographed images taken at a plurality of angles and brightness distribution information of each of the second photographed images are obtained. The brightness distribution information is corrected based on the relational model. Measured brightness values are obtained, and gray level correction values for a preset gray level is calculated. Color deviation is corrected based on the gray level correction values.
Claims9
A method for correcting color deviation for a bending region of a curved screen, the curved screen comprising a planar region and a curved region, the method comprising steps of:
- obtaining first photographed images taken at a plurality of angles in displaying single-color screens with different gray levels on the planar region of the curved screen, and obtaining brightness information of each of the first photographed images;
- according to the brightness information of each of the colors, establishing a relational model indicating corresponding brightness of subpixels of each of the colors under different gray levels and different angles, and according to the relational model, obtaining differences between the brightness yielded at a zero angle and the brightness yielded at each of the angles;
- obtaining second photographed images taken at a plurality of angles in displaying the single-color screens with different gray levels on a full region of the curved screen, and obtaining brightness distribution information of each of the second photographed images;
- correcting the brightness distribution information based on the relational model to obtain brightness data of the curved region corresponding to the zero angle;
- obtaining measured brightness values at a current gray level, and calculating gray level correction values for the preset gray level based on the measured brightness values and the brightness data;
- correcting the color deviation based on the gray level correction values;
- wherein the step of obtaining measured brightness values at a current gray level, and calculating gray level correction values for the preset gray level based on the measured brightness values and the brightness data comprises:
- selecting the brightness information corresponding to different gray levels from the brightness data to establish a correlation between the gray level and the brightness value of each of the subpixels;
- obtaining the measured brightness values at the current gray level, and calculating the gray level correction values for the preset gray level based on the measured brightness values and the correlation;
- and
- wherein the step of selecting the brightness information corresponding to different gray levels from the brightness data to establish a correlation between the gray level and the brightness value of each of the subpixels comprises:
- selecting the brightness information corresponding to different gray levels from the brightness data;
- fitting the brightness information corresponding to different gray levels using a least square approach to obtain the correlation between the gray level and the brightness value.
10 more elements
A method for correcting color deviation for a bending region of a curved screen, the curved screen comprising a planar region and a curved region, the method comprising steps of:
- obtaining first photographed images taken at a plurality of angles in displaying single-color screens with different gray levels on the planar region of the curved screen, and obtaining brightness information of each of the first photographed images;
- according to the brightness information of each of the colors, establishing a relational model indicating corresponding brightness of subpixels of each of the colors under different gray levels and different angles;
- obtaining second photographed images taken at a plurality of angles in displaying the single-color screens with different gray levels on a full region of the curved screen, and obtaining brightness distribution information of each of the second photographed images;
- correcting the brightness distribution information based on the relational model to obtain brightness data of the curved region corresponding to a zero angle;
- obtaining measured brightness values at a current gray level, and calculating gray level correction values for the preset gray level based on the measured brightness values and the brightness data;
- correcting the color deviation based on the gray level correction values;
- wherein the step of obtaining measured brightness values at a current gray level, and calculating gray level correction values for the preset gray level based on the measured brightness values and the brightness data comprises:
- selecting the brightness information corresponding to different gray levels from the brightness data to establish a correlation between the gray level and the brightness value of each of the subpixels;
- obtaining the measured brightness values at the current gray level, and calculating the gray level correction values for the preset gray level based on the measured brightness values and the correlation;
- and
- wherein the step of selecting the brightness information corresponding to different gray levels from the brightness data to establish the correlation between the gray level and the brightness value of each of the subpixels comprises:
- selecting the brightness information corresponding to different gray levels from the brightness data;
- fitting the brightness information corresponding to different gray levels using a least square approach to obtain the correlation between the gray level and the brightness value.
10 more elements
A device for correcting color deviation for a bending region of a curved screen, comprising:
- a first obtaining module, configured to obtain first photographed images taken at a plurality of angles in displaying single-color screens with different gray levels on a planar region of the curved screen, and obtain brightness information of each of the first photographed images;
- an establishing module, configured to, according to the brightness information of each of the colors, establish a relational model indicating corresponding brightness of subpixels of each of the colors under different gray levels and different angles;
- a second obtaining module, configured to obtain second photographed images taken at a plurality of angles in displaying the single-color screens with different gray levels on a full region of the curved screen, and obtain brightness distribution information of each of the second photographed images;
- a third obtaining module, configured to correct the brightness distribution information based on the relational model to obtain brightness data of the curved region corresponding to a zero angle;
- a fourth obtaining module, configured to obtain measured brightness values at a current gray level, and calculate gray level correction values for the preset gray level based on the measured brightness values and the brightness data;
- a correcting module, configured to correct the color deviation based on the gray level correction values;
- wherein the fourth obtaining module comprises:
- a fitting unit, configured to select the brightness information corresponding to different gray levels from the brightness data to establish a correlation between the gray level and the brightness value of each of the subpixels;
- a calculating unit, configured to obtain the measured brightness values at the current gray level, and calculate the gray level correction values for the preset gray level based on the measured brightness values and the correlation;
- and
- wherein the fitting module is configured for:
- selecting the brightness information corresponding to different gray levels from the brightness data;
- fitting the brightness information corresponding to different gray levels using a least square approach to obtain the correlation between the gray level and the brightness value.
10 more elements
Dependencies are inferred from the claim text.