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Method, device for removing pickup lens image scintillation and pickup lens

A camera and image technology, applied in the field of image processing, can solve problems such as large errors, and achieve the effect of reducing operation errors and avoiding erroneous operations

Inactive Publication Date: 2007-08-29
VIMICRO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a method and device for eliminating camera image flicker, and a camera to solve the problem of relatively large errors in the operation of eliminating the flicker phenomenon of camera images in the prior art

Method used

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  • Method, device for removing pickup lens image scintillation and pickup lens
  • Method, device for removing pickup lens image scintillation and pickup lens
  • Method, device for removing pickup lens image scintillation and pickup lens

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Embodiment Construction

[0058] Embodiments of the present invention provide a method, device, and camera for eliminating flickering of camera images, which are used to eliminate the flicker phenomenon in images collected by the camera. The present invention pre-sets the sampling line of each frame of image collected by the camera, and the described The current frame image collected by the camera and each sampling line of the previous frame image are divided into several segments, and the gray mean value of each segment image is calculated, and the gray value and the gray value of each segment image of each sampling line of the current frame image are calculated. The gray mean value of the same segment image of the same sampling line of the previous frame image is made a difference, and the several difference values ​​corresponding to each sampling line of the current frame image are obtained, and the difference value with the highest frequency of occurrence in the difference value is used as The grays...

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Abstract

The invention is in use for solving issue that operation in current technique for eliminating flicker phenomena of images from pick-up head exists bigger error. The invention sets up sampling rows of each frame of image collected by pick-up head in advance. The method includes steps: dividing each sampled row of current frame of image and previous frame of image into several segments, and calculating gray scale mean of each segment of image; calculating difference between gray scale mean of each segment of image in each sampling row of current frame and gray scale mean of each segment of image in each sampling row of previous frame so as to obtain several differences corresponding to each sampling row of current frame; difference value with highest occurrence frequency is as difference value of gray scale corresponding to the sampling row. Time of exposure of the pick-up head is adjusted based on the said difference value of gray scale corresponding to the sampling row.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for eliminating flickering of camera images and a camera. Background technique [0002] With the wide application of cameras in fields such as social life and home entertainment, the technologies involved in cameras are also undergoing rapid development. The camera generally adopts a row exposure method, that is, images of different rows are acquired at different time exposures. Most of the lamps used in daily use are powered by alternating current whose amplitude changes periodically, and the brightness power produced also fluctuates periodically. Therefore, when the row exposure time is not an integer multiple of the light power cycle, the brightness of different rows will change due to the different light energy received by different rows, thus forming light and dark stripes in the image. This phenomenon is called flicker. )Phenomenon. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/243H04N5/235G03B7/08H04N23/76
Inventor 邓亚峰卢虹王浩
Owner VIMICRO CORP
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