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Image contour extraction method and contour extraction device

A contour extraction and image technology, applied in the field of image processing, can solve the problems of brightness attenuation and insufficient brightness distribution, and achieve the effect of small calculation amount, avoiding wrong extraction and improving accuracy.

Active Publication Date: 2018-01-30
XIAMEN TIANMA MICRO ELECTRONICS +1
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  • Description
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Problems solved by technology

[0004] SPR technology needs to be realized through sub-pixel sharing. The brightness of most parts of the screen can be kept consistent with Real RGB. However, in non-shared areas, due to insufficient brightness distribution, there must be a problem of brightness attenuation.

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  • Image contour extraction method and contour extraction device
  • Image contour extraction method and contour extraction device

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Embodiment Construction

[0015] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

[0016] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0017] refer to figure 1 Shown is a schematic flowchart 100 of an image contour extraction method according to an embodiment of the present application.

[0018] Specifically, in step 110, a central pixel is selected in the image, wherein the central pixel is any pixel in the image that is not at...

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Abstract

The invention discloses a method and a device for extracting an image contour. The method for extracting an image contour comprises steps of choosing a center pixel in the image, wherein the center pixel is any pixel which is in the image and is not positioned in the boundary, obtaining a pixel matrix with a center pixel as a center, wherein the pixel matrix is a three-order matrix, obtaining the brightness values of all pixels in the pixel matrix to form a brightness matrix, wherein the brightness matrix is a three-order matrix, obtaining a result matrix based on the convolution operation result of the brightness matrix and a three-order operator, and determining whether the center pixel belongs to the image contour based on the values of all elements of the result matrix. The invention can accurately extract the pixels representing the image contour in the image and prevents the noisy point which does not belong to the image contour from being extracted.

Description

technical field [0001] The present disclosure generally relates to image processing technology, specifically relates to image contour extraction technology, and in particular relates to an image contour extraction method and contour extraction device. Background technique [0002] Currently, consumers are gradually improving their display taste for portable mobile terminals, and the design and development of high PPI (Pixels Per Inch, pixels per inch) display has become a hot spot in the display industry. At this stage, products above 800PPI have appeared, but the subsequent low aperture ratio and extremely high process requirements have made it difficult to improve the yield of high PPI products, so it is also difficult to reduce the cost. [0003] In this context, Sub Pixel Rendering (SPR, sub-pixel rendering) technology emerged as the times require, providing a shortcut for the marketization of high PPI technology. The so-called SPR technology means that low-PPI products...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/46
CPCG06T2207/20116
Inventor 方丽婷张沼栋
Owner XIAMEN TIANMA MICRO ELECTRONICS
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