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System and method for eliminating purple boundary of image

一种紫边、图像的技术，应用在图像处理领域，能够解决用户体验困扰等问题，达到避免硬件结构复杂、避免误判、提高图像拍摄质量和用户体验的效果

Active Publication Date: 2017-05-10
ARASHI VISION INC
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Both of the above two methods of eliminating purple fringing have defects, which cause great trouble to the user experience

Method used

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  • System and method for eliminating purple boundary of image
  • System and method for eliminating purple boundary of image

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Embodiment Construction

[0042] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. This embodiment is only a preferred embodiment of the present invention and does not constitute a limitation to the protection scope of the present invention.

[0043] Such as figure 1 Shown is a module diagram of the image purple fringing elimination system of the present invention, the image purple fringing elimination system includes an image acquisition module 101 , a threshold calculation module 102 , a purple fringing detection module 103 , a purple fringing correction module 104 and an image output module 105 .

[0044] After the image acquisition module 101 acquires the image, the threshold calculation module 102 traverses the pixels of the image obtained by the image acquisition module 101, calculates the hue of the pixel, and uses the preset threshold interval [195-315] to count the total number of pixels falling withi...

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Abstract

The invention discloses a system and method for eliminating a purple boundary of an image. The method comprises the following steps of: traversing pixel points of the image by the system, calculating hues of the pixel points, counting the pixel points in the purple hue and the pixel points close to the purple hue by utilizing a pre-set threshold value interval, and calculating the ratio of the pixel points in the whole image, so that a dynamic purple boundary detection threshold value is obtained; creating a template image, which is same as an image obtained by an image obtaining module in size, and obtaining the pixel points falling into a purple boundary area; and correcting the detected purple boundary pixel points, and correcting a red intensity value and a blue intensity value by using a green intensity value. The invention further provides the method for eliminating the purple boundary of the image. By means of the system and method for eliminating the purple boundary of the image disclosed by the invention, the purple boundary of the image can be automatically corrected; the image shooting quality and the user experience are improved; the problems of complex hardware structure, high hardware cost and long research and development period due to change of the structure of a camera or a lens traditionally can be avoided; and simultaneously, the problem that the purple boundary is corrected unreasonably due to erroneous judgement because of unreasonable threshold value setting can also be avoided.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to an image purple fringe elimination system and method. Background technique [0002] The purple fringing phenomenon is the dispersion that tends to appear at the junction of the high-light area and the low-light area due to the large brightness contrast of the scene being photographed during the process of taking pictures with a digital camera. The appearance of purple fringing is related to the dispersion of the camera lens, the small imaging area of ​​the CCD, and the signal processing algorithm inside the camera. Even high-end digital cameras cannot completely solve the problem of purple fringing. [0003] The industry’s usual first approach is to avoid purple fringing when taking pictures by changing the hardware structure of the camera or lens, so as to achieve the purpose of eliminating image purple fringing. This method of changing the hardware structure is costl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/04
CPCH04N23/10H04N9/646H04N25/61H04N25/611H04N9/643G06T5/92
Inventor 蔡锦霖刘靖康
Owner ARASHI VISION INC
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