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Automatic exposure control method and device based on red component feature detection

An automatic exposure and feature detection technology, applied in the field of image processing, can solve problems such as unfavorable video effect presentation

Active Publication Date: 2022-04-05
睿视(天津)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among them, the collection and analysis of medical images during the operation is particularly important, and the requirements for the presentation of clear images are extremely high. However, a large number of scenes during the operation are scenes with rich red components after bleeding, and the captured images are also rich in red components. For images, the usual exposure statistics algorithm strategy is not conducive to the actual video effect presentation

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  • Automatic exposure control method and device based on red component feature detection
  • Automatic exposure control method and device based on red component feature detection

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Embodiment 1

[0045] Such as figure 2 shown, since color drawings cannot be used, the figure 2 What is displayed is a grayscale image, in which the dark color area is actually the red area in the color image, that is, the area with rich red components;

[0046] figure 2 The image on the left is the image effect of the commonly used median exposure, the red median value is 205, the green median value is 80, and the blue median value is 65. The overall median value of the three channels of the image is 105. Because the red component of the figure is very different from other components. Therefore, based on the overall exposure of the image, the overall image appears red.

[0047] Adopt the method of the present invention to carry out exposure control, the target value of image exposure is set as 105, and concrete process is as follows:

[0048] Define H[256] as an array with a length of 256, and initialize all values ​​to 0;

[0049] Define the pixel value of the red channel as R, th...

Embodiment 2

[0056] Embodiment 2 specifically proposes the device required to complete the automatic exposure control method based on red component feature detection in the present invention, and the device mainly includes the following modules:

[0057] 1. The array H definition module is used to define an array H[256], and set the initial value of each element in the array to zero;

[0058] 2. The R value obtaining module is used to obtain the value of the red channel pixel value R of each pixel of the image;

[0059] 3. The array H assignment module is used for: if the value of the red channel pixel value R of a certain pixel is v, then make H[v]= H[v]+1 in the array; calculate accordingly for each pixel of the image The formula is executed once; the finally generated array H is the histogram of the image;

[0060] 4. Array C definition module, used to define another array C[256], the value of each element in the array is C[x] = H[0] + H[1] + ... + H[x-1], x =0,1,...,255; The generate...

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Abstract

The present invention proposes an automatic exposure control method and device based on red component feature detection, calculates the image based on the red channel pixel value R in the image, obtains the statistical value of the red component, performs statistical analysis, and realizes the red component based on the image The function of adjusting the target value of image exposure, so that the image can be presented with clear effect.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to an automatic exposure control method and device based on red component feature detection. Background technique [0002] In the process of medical diagnosis and treatment, image sensing devices are often used, including image sensors on diagnostic equipment or separate image recording devices, etc. The purpose is to collect medical images through these image sensing devices. The intelligent analysis of images assists doctors in more effective and professional diagnosis and treatment of pathology, and improves the accuracy and scope of treatment. [0003] Among them, the collection and analysis of medical images during the operation is particularly important, and the requirements for the presentation of clear images are extremely high. However, a large number of scenes during the operation are scenes with rich red components after bleeding, and the captured ima...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/243H04N23/76
CPCH04N23/76
Inventor 高莹莹
Owner 睿视(天津)科技有限公司