Image processing method for enhancing image border resolution

An image processing and edge technology, applied in the field of image processing, can solve the problem of blurring small edges of images, and achieve the effect of wide loading, improving image resolution, and reducing image blurring.

Active Publication Date: 2013-09-18
COREL CORP
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Problems solved by technology

The use of nonlinear methods can effectively improve the lack of linear methods, but the small edges of the image are still quite blurred

Method used

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  • Image processing method for enhancing image border resolution
  • Image processing method for enhancing image border resolution
  • Image processing method for enhancing image border resolution

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Embodiment Construction

[0021] The present invention proposes an image processing method for enhancing image edge analysis, which uses a bidirectional filter to eliminate image layer noise while maintaining a smooth edge, and then uses a sharpening filter to gradient the image layer to reduce image layer burrs The non-uniform edge is caused, and the texture and edge details of the image layer are increased. Finally, the image layer is interpolated through the interpolation filter to increase the resolution of the image layer. Below, the technical features of the present invention will be described in detail with preferred embodiments.

[0022] figure 1 For the flowchart of the enhanced image edge analysis of the present invention, as shown in the figure, at first, as step S10, an image is converted into an image layer, and the format of the image layer is three primary colors of color light (RGB), brightness, hue saturation (YUV ) or lightness red green degree yellow blue degree (CIE-Lab).

[0023]...

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Abstract

The invention discloses an image processing method for enhancing image border resolution, and the method provided by the invention comprises the following steps: converting an image into an image layer; removing the noise from the image layer by using a bidirectional filter and generating an image layer with high resolution ratio; grading the image layer with high resolution ratio by using a sharpen filter, removing the inhomogeneous edge of the image layer with high resolution ratio and generating a sharpen image layer; and reinserting the sharpen image layer by using a reinserting filter and generating an image layer with high resolution. By using the image processing method provided by the invention, the image dimming is greatly reduced, the image resolution ratio is increased, and the method can be widely loaded to various image processing hardware devices.

Description

technical field [0001] The present invention relates to an image processing method, in particular to an image processing method for enhancing image edge resolution applicable to various main boards, display cards or image processing devices. Background technique [0002] Due to the continuous improvement of the current display technology, the early picture tube display screens are gradually eliminated and replaced by liquid crystal (Liquid Crystal) or plasma (Plasma) flat display devices. And most flat display devices have (1920×1080p) high definition (High Definition, HD) resolution. However, the resolution of the general image format is lower than the standard definition (Standard Definition, SD) of the high standard. Problems matching the display with the display device. Video upsampling and digital image enhancement (superresolution) can be used to display low-resolution standard images on high-resolution display devices, but the image enhancement technology is a metho...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/21H04N5/208G06T5/00
Inventor 朱立华吴海华褚仲韬花继伟
Owner COREL CORP
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