Image processing method and apparatus thereof

An image processing device and image processing technology, which are applied in the field of image processing, can solve problems such as image edge blur, reduce consumer visual experience, and jagged edges, and achieve the effect of improving smoothness and avoiding image edge aliasing

Active Publication Date: 2012-08-08
北京澜景科技有限公司
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Problems solved by technology

[0003] Bilinear interpolation and bicubic interpolation are two methods commonly used in image magnification processing. The implementation complexity of these two methods is low, but both methods will bring blur and jagged edges of the image. Moreover, these problems Accelerated with increasing magnification ratios, these image quality degradations due to magnification operations greatly degrade the consumer's viewing experience

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  • Image processing method and apparatus thereof
  • Image processing method and apparatus thereof
  • Image processing method and apparatus thereof

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Embodiment Construction

[0022] figure 1 It is a flowchart of an image processing method provided by an embodiment of the present invention. Such as figure 1 As shown, the image processing method provided in this embodiment is specifically applied to the process of zooming in on images, and can be executed by an image processing device, which can be integrated in, for example, a television, a set-top box, a video processor or an image acceleration unit, etc. The image processor of the device can also be set separately, and the image processing device can be realized by means of software and / or hardware.

[0023] In the actual image enlargement process, the original image is the image to be enlarged. For example, the resolution of the original image is 720×480. When the original image is enlarged into a target image with a resolution of 1440×960, the target image The number of target pixels in is four times the number of original pixels in the original image. The original image is interpolated to ge...

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Abstract

The invention provides an image processing method and an apparatus thereof. The image processing method comprises the following steps: determining an edge direction of pixel points to be interpolated in an original image; if an included angle of the edge direction and a horizontal direction is greater than 45 degree, determining first transition interpolation points, generating pixel values of the first transition interpolation points according to the pixel values of at least two original pixel points which are upper and lower adjacent to the first transition interpolation points, and generating the pixel values of the pixel points to be interpolated according to the pixel value of the each first transition pixel point; if the included angle of the edge direction and the horizontal direction is not greater than 45 degree, determining second transition interpolation points, generating the pixel values of second transition interpolation points according to the pixel values of at least two original pixel points which are left and right adjacent to the second transition interpolation points, and generating the pixel values of the pixel points to be interpolated according to the pixel value of the each second transition pixel point. By using the image processing method and the apparatus of the invention, smoothness and sharpness of the image edge after amplification processing can be increased.

Description

technical field [0001] The present invention relates to image processing technology, in particular to an image processing method and device. Background technique [0002] Image and video upscaling is a very basic application that is required for almost all applications involving image and video processing. In the field of consumer electronics such as televisions and set-top boxes, the resolution of the traditional (US) National Television Standards Committee (NTSC) standard is 720x480, and it needs to be 6 times as high-definition as displaying 1920x1080. Zoom in, and display on a TV with a resolution of 3840x2160 needs to be zoomed in by 24 times. In image processing applications, image enlargement is ubiquitous, and almost all image browsers have an image enlargement function. [0003] Bilinear interpolation and bicubic interpolation are two methods commonly used in image magnification processing. The implementation complexity of these two methods is low, but both method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40
Inventor 许丹
Owner 北京澜景科技有限公司
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