Anti-vignetting method and device for spliced image, and terminal equipment

A technology of splicing images and images, which is applied in the field of image processing, can solve problems such as not being able to eliminate the vignetting effect of spliced ​​images well, and achieve the effect of eliminating the vignetting effect and enhancing the imaging effect

Inactive Publication Date: 2017-10-17
THUNDER SOFTWARE TECH SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, an embodiment of the present invention provides a method for anti-vignetting of stitched images, its device, and terminal equipment, so as to solve the problem that the existing anti-vignetting method for stitching images cannot well eliminate the vignetting effect of stitched images

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  • Anti-vignetting method and device for spliced image, and terminal equipment
  • Anti-vignetting method and device for spliced image, and terminal equipment
  • Anti-vignetting method and device for spliced image, and terminal equipment

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Embodiment 1

[0029] figure 1 A flow chart of a method for splicing images against vignetting provided by the first embodiment of the present invention is shown, and the details are as follows:

[0030] In step S101, automatic exposure compensation is performed on the input light intensity of each camera according to the exposure data of the image processor.

[0031] Due to the different positions of multiple cameras, different light incident directions such as forward light, backlight, and side light will be formed. Due to different light incident directions, the light incident amount of multiple cameras will be different, resulting in inconsistent brightness of the acquired images. Through the automatic exposure compensation of the input light intensity of each camera, multiple cameras can realize the linkage of exposure mechanism, that is, compare the exposure data of the image processors of multiple cameras, and then calculate the compensation value or suppression of the exposure data o...

Embodiment 2

[0056] corresponds to figure 1 A method for splicing images to resist vignetting in the first embodiment shown, figure 2 A structural block diagram of the anti-vignetting device for splicing images provided by Embodiment 2 of the present invention is shown. For convenience of description, only parts related to the embodiment of the present invention are shown.

[0057] refer to figure 2 , the above-mentioned anti-vignetting device 20 for stitching images includes: a first compensation module 21 , a second compensation module 22 and a median filter module 23 .

[0058] The first compensation module 21 is used for performing automatic exposure compensation on the input light intensity of each camera according to the exposure data of the image processor.

[0059] The second compensation module 22 is used for stitching the images acquired by each camera after automatic exposure compensation and performing display lookup table compensation on the stitched images.

[0060] The ...

Embodiment 3

[0078] image 3 It is a schematic diagram of a terminal device provided by an embodiment of the present invention. Such as image 3 As shown, the terminal device 3 of this embodiment includes: a processor 30, a memory 31, and a computer program 32 stored in the memory 31 and operable on the processor 30, such as the program of the above-mentioned method for uninstalling an application program. When the processor 30 executes the computer program 32, the steps in the above-mentioned method embodiments for uninstalling application programs are implemented, for example figure 1 Steps S101 to S103 are shown. Alternatively, when the processor 30 executes the computer program 32, the functions of the modules / units in the above-mentioned device embodiments are realized, for example figure 2 Functions of modules 21 to 23 shown.

[0079] Exemplarily, the computer program 32 can be divided into one or more modules / units, and one or more modules / units are stored in the memory 31 and ...

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Abstract

The invention is applicable to the technical field of image processing, and provides an anti-vignetting method and an anti-vignetting device for a spliced image, and terminal equipment. The method comprises the steps of performing automatic exposure compensation on input light intensity of each camera according to exposure data of an image processor; splicing the images acquired by each camera after automatic exposure compensation and performing display lookup table compensation on the spliced image; and reading and judging a gray value difference at the image joint after the display lookup table compensation is performed, and performing median filtering on the gray value difference. The problem that the images acquired by the plurality of cameras are inconsistent in brightness is solved by performing automatic exposure compensation on light intensity of the image acquired by each camera, then corresponding compensation factor compensation is performed on the corresponding pixel position of the spliced image via the display lookup table, and median filtering is performed on the gray value difference at the image joint, so that the vignetting effect of the spliced image can be effectively eliminated, and the imaging effect of the spliced image is reinforced.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a splicing image anti-vignetting method, a device thereof, and a terminal device. Background technique [0002] The vignetting effect is a problem of light intensity attenuation related to the position of the signal generated at the output of the optical system. In the optical system, when an object point far away from the optical axis is imaged, due to the existence of the diaphragm, the light beam that can reach the image plane Gradually become narrower, resulting in the gradual darkening of the off-axis image points, which will produce shadows at the four corners of the image and affect the quality of imaging. When stitching multiple images into a panoramic image, the vignetting effect will cause Obvious differences in brightness are produced at the stitching point, which leads to poor imaging effect of the stitched image. Therefore, it is necessary to red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/235
CPCH04N23/72H04N23/73
Inventor 马军禄
Owner THUNDER SOFTWARE TECH SHENZHEN
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