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Method and device for configuring head-end parameter of camera

A camera and exposure parameter technology, applied in the field of image processing, can solve problems such as picture brightness imbalance, faults in moving objects, etc., to achieve the effect of ensuring consistency, eliminating faults and splicing gaps

Inactive Publication Date: 2011-10-19
ZHEJIANG GONGSHANG UNIVERSITY
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Problems solved by technology

[0005] In view of this, the present invention proposes a camera front-end parameter configuration method and device to solve the problems of image brightness imbalance in each part of the image when multi-camera acquisition is used for splicing, faults and splicing gaps when there are moving objects on the edge of the splicing, and so on. Improve the actual effect of the stitched image

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] Considering the influence of the brightness of the images collected by each camera in the camera array and the difference in the exposure start time on the image mosaic, the present invention introduces the global image brightness into the exposure control algorithm, and together with the expected brightness, it is used to adjust the exposure time and image gain of the camera array. parameters. The main methods provided by the present invention are as figure 2 As shown, the following steps may be included:

[0037] Step 201: Determine the image brightness information Illum_CAM_N(k) collected by each camera in the camera array at the last sampling time k.

[0038] Step 202: Use the average value of Illum_CAM_N(k) or take the average value...

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Abstract

The invention discloses a multi-camera head-end control method and device, which solve the problems that when images collected by a camera array are used for splicing, the image luminance of each camera is inconsistent, and the edges of the images to be spliced have faults and splicing gaps while moving objects exist in the images, therefore the effects of spliced images are improved. In the embodiment of the invention, a camera head-end global control unit is additionally arranged the traditional scheme, image luminance information of each camera at the front end after exposure is collected, the exposing parameter of each camera is obtained by an exposure algorithm, and the exposure starting time of the camera array is synthesized. The embodiment of the invention is mainly used for collecting images of different areas by a plurality of cameras in the camera array and generating a big scene picture by splicing.

Description

technical field [0001] The invention relates to an image processing technology, in particular to a method and a device for configuring front-end parameters of a camera. Background technique [0002] Multiple images captured by cameras at different angles can be spliced ​​to obtain a panoramic image with a large field of view, which has higher resolution and a larger field of view than a single image. Image stitching technology has always been a hot research direction in computer vision, image processing and computer graphics. It can be used to create high-resolution images with a large viewing angle, and is widely used in the video surveillance industry, virtual reality field, and medical image processing field. [0003] In the existing processing flow, the general process of image stitching consists of three steps: image acquisition, image matching, and image synthesis. Among them, image matching is an important step in image stitching. It is necessary to find out a scene ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N5/235
Inventor 曾慧
Owner ZHEJIANG GONGSHANG UNIVERSITY
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