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A method and system for illumination compensation of panoramic images

A panoramic image and light compensation technology, which can be used in graphics and image conversion, image data processing, instruments, etc., can solve the problem of low image recognition

Active Publication Date: 2020-05-22
深圳市梦网视讯有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiment of the present invention is to propose a lighting compensation method for a panoramic image, aiming at solving the problem of low image recognition when both front light and backlight exist in the prior art panoramic image

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  • A method and system for illumination compensation of panoramic images
  • A method and system for illumination compensation of panoramic images
  • A method and system for illumination compensation of panoramic images

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Embodiment 1

[0030] figure 1 It is a flow chart of an illumination compensation method for a panoramic image in a preferred embodiment of the present invention; the method includes the following steps:

[0031] Step1: Calculate the judgment statistics of the stitched panoramic image sequence.

[0032] Step11: Calculate

[0033] in, Indicates the brightness k distribution value of the nth image, k represents the brightness value, 0≤k≤255, 1≤n≤N, N is the number of images in the stitched panoramic image sequence; sum( 变量 | 条件 ) represents the sum of the variables that meet the conditions; n represents the image sequence number, Pic n Indicates the nth image in the image sequence, if Pic n If it is an image in RGB format, it can be converted through a known image model to obtain Pic n Brightness value corresponding to each pixel; y n (i,j) means Pic n The brightness value of the pixel in the i-th row and the j-column, i, j represent the row coordinates and column coordinates of t...

Embodiment 2

[0081] Figure 4 It is a structural diagram of an illumination compensation system for a panoramic image in a preferred embodiment of the present invention; the system includes:

[0082] Judgment statistic calculating device, used for calculating the judgment statistic of mosaic panoramic image sequence;

[0083] The peak parameter descending order module is used to arrange the peak parameters of the image in descending order, obtain the image peak parameter sequence after descending order, and its corresponding first distribution parameter sequence, second distribution parameter sequence, third distribution parameter sequence, and the corresponding image sequence;

[0084] Specifically: the peak(Pic n ) in descending order, recorded as peak 1 、peak 2 ,...,peak n ..., peak N , which corresponds to the first, second, and third distribution parameters and is denoted as disa 1 、disa 2 ,..., disa N , disb 1 、disb 2 ,...,disb N ,disc 1 、disc 2 ,...,disc N , and its c...

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Abstract

The invention discloses a panoramic image illumination compensation method and system. The method firstly analyzes the brightness of the panoramic mosaic image to determine the type requiring the illumination compensation; then the visibility of object in the insufficient illumination scene is increased by making use of the full compensation mode; a part compensation mode is used to solve the backlighting defect image, which makes the mosaic panoramic image has the effect of the light transition of virtual nature, so the advantages of the panorama are enhanced.

Description

technical field [0001] The present invention relates to the technical field of image illumination compensation, in particular to an illumination compensation method and system for a panoramic image. Background technique [0002] Because the panoramic image can contain 360-degree picture range information because of its horizontal viewing angle, it has a wider application field, such as panoramic video surveillance, virtual environment construction, aerial photography, commercial display, etc. At present, there are two commonly used methods for obtaining panoramic images: one is to directly use special optical equipment to collect panoramic images; the other is to collect multi-viewpoint images from multiple common lenses, and then synthesize them through algorithms. The resolution of the panoramic image obtained by the first method is relatively low, and the cost is high. The second method is adopted in many places because of its easy implementation and low cost. However, n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/40
CPCG06T3/4038
Inventor 马国强
Owner 深圳市梦网视讯有限公司