Halo test method and halo test device
AssigneeHkc Corporation Limited
InventorsYang He, Junfeng Xie
Life of this patent
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Abstract
A halo test method includes selecting one or more to-be-tested regions from a to-be-tested display device; and lighting up a target test region with a preset grey scale; and then obtaining luminances where a plurality of unlit pixel points within a preset range from the target test region are located, and obtaining the normalized grey scales corresponding to the luminances where each unlit pixel point is located; and then based on the normalized grey scale corresponding to the luminance, obtaining normalized grey scale difference information measured in the target test region; and obtaining a halo value of the to-be-tested display device based on the normalized grey scale difference information measured in the one or more to-be-tested regions.
Claims19
A halo test method, comprising:
- selecting, by a processor, one or more to-be-tested regions defined within a display region of a to-be-tested display device, wherein the to-be-tested display device comprises the display region and a non-display region;
- lighting up a target test region with a preset grey scale, wherein the target test region is one of the to-be-tested regions;
- obtaining luminances where a plurality of unlit pixel points surrounding the target test region and within a preset range from the target test region are located;
- based on a proportion relationship between the luminances where each of the plurality of unlit pixel points in a same direction of the target test region is located and a display luminance of the display region when the to-be-tested display device is lit up with the preset grey scale, obtaining, through calculation, normalized grey scales corresponding to the luminances where each unlit pixel point is located, wherein each unlit pixel point in the same direction of the target test region is located in the same side of the target test region and in the same straight line as a centre of the target test region;
- based on a maximum normalized grey scale and a minimum normalized grey scale of the normalized grey scales corresponding to the luminances where each unlit pixel point in the same direction of the target test region is located, obtaining normalized grey scale difference information measured in the target test region;
- and
- obtaining a halo value of the to-be-tested display device based on a minimum grey scale difference in or an average value of the normalized grey scale difference information measured in the one or more to-be-tested regions.
A halo test device, comprising:
- one or more processors;
- and
- memory for storing one or more computer programs;
- wherein when the one or more computer programs are executed by the one or more processors, the one or more processors implement a halo test method;
- wherein the method comprises:
- selecting one or more to-be-tested regions defined within a display region of a to-be-tested display device, wherein the to-be-tested display device comprises the display region and a non-display region;
- lighting up a target test region with a preset grey scale, wherein the target test region is one of the to-be-tested regions;
- obtaining luminances where a plurality of unlit pixel points surrounding the target test region and within a preset range from the target test region are located;
- based on a proportion relationship between the luminances where each of the plurality of unlit pixel points in a same direction of the target test region is located and a display luminance of the display region when the to-be-tested display device is lit up with the preset grey scale, obtaining, through calculation, normalized grey scales corresponding to the luminances where each unlit pixel point is located, wherein each unlit pixel point in the same direction of the target test region is located in the same side of the target test region and in the same straight line as an centre of the target test region;
- based on a maximum normalized grey scale and a minimum normalized grey scale of the normalized grey scales corresponding to the luminances where each unlit pixel point in the same direction of the target test region is located, obtaining normalized grey scale difference information measured in the target test region;
- and
- obtaining a halo value of the to-be-tested display device based on a minimum grey scale difference in or an average value of the normalized grey scale difference information measured in the one or more to-be-tested regions.
Dependencies are inferred from the claim text.