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Panoramic image brightness correction method and splicing method and device

A technology of brightness correction and panoramic images, which is applied in the field of panorama stitching, which can solve the problems of large differences in brightness values ​​of panoramic images and unnatural transition of brightness values ​​in stitching areas, and achieve the effect of minimizing the difference in brightness values ​​of stitching areas and optimizing user experience

Pending Publication Date: 2019-07-05
SHANGHAI BAOLONG AUTOMOTIVE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the luminance values ​​of the images to be stitched are different, the luminance values ​​of the stitched panoramic images are quite different, and the transition of the luminance values ​​in the stitching area is unnatural, and there are still obvious traces of image stitching.

Method used

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  • Panoramic image brightness correction method and splicing method and device
  • Panoramic image brightness correction method and splicing method and device
  • Panoramic image brightness correction method and splicing method and device

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no. 1 example

[0029] figure 1 It is a schematic diagram of a panoramic image brightness correction device 100 according to an embodiment of the present invention. Such as figure 1 As shown, the panoramic image brightness correction device 100 includes a camera 101 , an I / O interface 102 , an image processor 103 , a memory 104 and a video memory 105 . When used in a car, the I / O interface 102, the image processor 103, the memory 104 and the video memory 105 can be set in the car machine, and the camera 101 is located outside the car machine. The camera 101 is used to acquire multiple images to be spliced. For example, the images to be stitched may be images surrounding the vehicle. The I / O interface 102 is connected to the camera 101 and the image processor 103 . The I / O interface 102 is used for receiving multiple images to be stitched captured by the camera 101 and forwarding the multiple images to be stitched to the image processor 103 . The I / O interface 103 may be a serial interfac...

no. 2 example

[0062] Figure 5 It is a schematic diagram of a panoramic image stitching device 200 according to an embodiment of the present invention. Such as Figure 5 As shown, the panoramic image stitching device 200 of this embodiment includes a camera 201 , an I / O interface 202 , an image processor 203 , a memory 204 , a video memory 205 , a display driver module 206 and a display 207 . The camera 201, the I / O interface 202, the image processor 203, and the memory 204 are similar to the components with the same name in the panoramic image brightness correction device 100 of the first embodiment. The camera 201 is used to acquire multiple images to be spliced. For example, the images to be stitched are images surrounding the vehicle. The I / O interface 202 is connected to the camera 201 , the image processor 203 and the display driver module 206 . The I / O interface 202 is used to receive multiple images to be stitched acquired by the camera 201 , forward the multiple images to be st...

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Abstract

The invention relates to a panoramic image brightness correction method. The method comprises the following steps: obtaining a plurality of to-be-spliced images; determining a splicing area of the plurality of to-be-spliced images; calculating the average brightness value of each splicing area; calculating a plurality of brightness correction coefficients which enable the average brightness valuedifference of the corresponding splicing areas of the plurality of to-be-spliced images to be minimum; and correcting the brightness of the plurality of to-be-spliced images by using the plurality ofbrightness correction coefficients. The invention also relates to a panoramic image splicing method.

Description

technical field [0001] The present invention relates to the technical field of panorama image stitching, in particular to a panoramic image brightness correction method, a stitching method and a device thereof. Background technique [0002] In the automotive 360 ​​panoramic application, it is necessary to stitch the images collected by the cameras installed in all directions of the vehicle to output a panoramic view image. Due to the different installation positions of the cameras, when there is a strong light source in a certain direction of the car, the image brightness of the camera on the side facing the strong light will be low, and the image brightness of the camera facing the strong light will be high. If there is no processing and direct splicing, the spliced ​​surround view will have large differences in brightness and darkness in all directions, and the traces of image splicing will be obvious, which will affect the user experience. [0003] The currently existing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40G06T5/00G06T5/50
CPCG06T3/4038G06T5/50G06T2207/20216G06T2207/20221G06T5/77
Inventor 李威范毅许定超王现利
Owner SHANGHAI BAOLONG AUTOMOTIVE CORP
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