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Image display method and image processing method

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

Active Publication Date: 2016-04-13
XIAN NOVASTAR TECH
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  • 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
  • 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 (UnsharpeningMask) method to enhance the large-scale image Strength of brightness steps at 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-sca...

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Abstract

The invention relates to an image display method and an image processing method. The image display method comprises following steps: (i), receiving a video image; (ii), carrying out image segmentation processing to the input video image to obtain the large scale edge of the video image; (iii) carrying out edge sharpening processing to the input video image so as to form sharp edge step at the large scale edge of the video image, further obtaining a target video image with enhanced sensing contrast ratio under the illusion effect formed through paying close attention to the sharp edge by human eyes;; and (iv) output the target video image to a target display screen to carry out image display. According to the invention, relatively sharp edge profile is obtained through applicably increasing the edge step such as edge brightness step; therefore, the sensing depth of the image and the depth of field of the displayed image are increased through the illusion effect formed by paying close attention to the sharp edge by human eyes; and further the human eye sensing contrast ratio of the displayed image is improved.

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 Applications(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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