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Image display method and image processing method

An image display and image technology, applied in the field of image processing, can solve the problems of complex and changeable use cases, and achieve the effect of increasing image perception depth, increasing depth of field, and improving human eye perception contrast.

Active Publication Date: 2019-01-29
XIAN NOVASTAR TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] As a media tool used in many occasions, LED display screens are complex and changeable.

Method used

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  • Image display method and image processing method
  • Image display method and image processing method

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no. 1 example

[0035] The first embodiment of the present invention performs image segmentation processing on the original image to find the large-scale edge in the original image, and then increases the edge step at the large-scale edge to obtain a relatively sharp edge contour, and then obtains the target image with increased global contrast , the specific steps are, for example:

[0036] First, the original image is obtained and image segmentation is performed on the obtained original image to obtain large-scale edges in the original image.

[0037] There are many ways to obtain large-scale edges. For example, the K-means clustering algorithm is used to segment the original image, K=2, that is to say, the original image is divided into two pieces to obtain the foreground and background areas of the original image. Get the large-scale edges of the original image.

[0038] Then, the original image is edge-sharpened by countershading method to obtain sharp edge steps at the large-scale edge...

no. 2 example

[0046] The difference between the second embodiment and the aforementioned first embodiment lies in: the implementation method of increasing (or sharpening) the edge brightness step at the large-scale edge, which uses the unsharpening mask (Unsharpening Mask) method to enhance the image Intensity of brightness steps at large-scale edges. Specifically, it can be:

[0047] First, blur the luminance channel of the original image to obtain a blurred image, that is, segment the base layer containing large-scale edges in the luminance channel (or luminance component) of the original image. Specifically, a 5*5 Gaussian filter (which is An edge-preserving image filter) performs low-pass filtering on the original image, filters out the high-frequency part in the brightness channel of the original image, and obtains a base layer containing large-scale edges corresponding to the low-frequency part of the original image, thereby realizing image Segmentation is processed and large-scale e...

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Abstract

The invention relates to an image display method and an image processing method thereof. The image display method includes the steps of: (i) receiving an input video image; (ii) performing image segmentation processing on the input video image to obtain large-scale edges of the input video image. ; (iii) Perform edge sharpening processing on the input video image to form sharp edge steps at the large-scale edges of the input video image, thereby obtaining a target video with enhanced perceived contrast under the illusion effect caused by the human eye focusing on sharp edges. image; and (iv) output the target video image to the target display screen for image display. The present invention obtains a relatively sharp edge profile by appropriately increasing the edge steps, such as edge brightness steps, at the large-scale edge of the image, thereby making it possible to use the optical illusion effect caused by the human eye's attention to sharp edges to increase the depth of image perception and increase the quality of the displayed image. Depth of field, thereby improving the perceived contrast of the displayed image by the human eye.

Description

technical field [0001] The present invention relates to the technical field of image processing and display, in particular to an image display method and an image processing method. Background technique [0002] The dynamic range of the display device is an important indicator. Dynamic range refers to the maximum contrast ratio of a display device, that is, the ratio of the highest brightness to the lowest brightness. A display device with a high dynamic range can present a display scene closer to the real world. At the same time, the high dynamic range means that the image displayed by the display device can have better global contrast, the foreground and background of the image have higher divisions, and the image has a better layering. The low dynamic range compresses the contrast space that the image can display, making the image appear gray and lacks sufficient layering and contrast. [0003] As a media tool used in many occasions, LED display screens are complex and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T5/00
CPCG06T2207/10016G06T5/73
Inventor 杨城袁胜春宗靖国
Owner XIAN NOVASTAR TECH
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