A multi-channel ccd camera image correction method and device
An image correction and camera technology, applied in image communication, TV, color TV components, etc., can solve problems such as brightness and chromaticity deviation, and achieve the effect of improving uniformity, improving output image quality, and ensuring fidelity
Active Publication Date: 2018-11-13
ZHEJIANG UNIVIEW TECH CO LTD
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In the multi-channel CCD mosaic image, due to the corresponding difference of the pixels caused by the CCD area array process, the gain, dark current, wiring and other factors between each channel, the brightness and chromaticity of different areas of the image after the multi-channel mosaic are completed There is a slight deviation in the above, and there is obvious non-uniformity
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0057] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0058] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.
[0059] It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, the information should not be limited to these terms. These terms are on...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention provides a multi-channel CCD camera image correction method and device, wherein the method includes: in the system debugging stage, determining an ideal weighted pulse width value of a preset gain section; according to the ideal weighted pulse width value and preset sampling Points, to obtain the sampling point data of each channel; according to the preset rules, segment the expected brightness sampling interval of the preset color brightness component under the preset gain segment to obtain several brightness segments; according to the value interval falling into each brightness segment Determine the linear fitting parameters corresponding to the preset color brightness components in each brightness segment; select a CCD sampling channel as the reference channel for correcting image color brightness, and determine other CCD sampling channels relative to the reference channel according to the linear fitting parameters correction parameters. The mosaic image obtained by using the image correction method provided in the present application has good uniformity, and the image quality output by the multi-channel CCD image acquisition system is improved.
Description
technical field [0001] The invention relates to the technical field of digital image processing, in particular to a multi-channel CCD camera image correction method and device. Background technique [0002] At present, high-definition network cameras have been widely used in security monitoring, safe city, intelligent transportation and other fields. High-definition network cameras mainly use CCD (Charge Coupled Device, Charge Coupled Device) image sensors with excellent photosensitivity and low noise as image acquisition sensors. Due to the limitations of the CCD process, in order to obtain high-resolution images with a large area array and a high frame rate, it is necessary to use a multi-channel camera for image stitching. [0003] In the multi-channel CCD mosaic image, due to the corresponding difference of the pixels caused by the CCD area array process, the gain, dark current, wiring and other factors between each channel, the brightness and chromaticity of different ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232H04N5/235
CPCH04N23/682H04N23/71
Inventor 徐彪周波徐星
Owner ZHEJIANG UNIVIEW TECH CO LTD