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Method of evaluating image quality

An image quality and image technology, applied in image communication, television, electrical components, etc., can solve problems such as inapplicable image quality, unable to verify camera image analysis requirements, etc.

Active Publication Date: 2019-04-26
GORILLA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On-site deployment personnel are often unable to verify whether the camera images meet the analysis requirements due to lack of sufficient tools and professional knowledge
The traditional camera image quality analysis method is used to adjust the camera hardware, especially the image quality adjustment before the hardware leaves the factory, and it is not suitable for evaluating the quality of the image captured in an actual scene

Method used

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  • Method of evaluating image quality
  • Method of evaluating image quality

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Embodiment Construction

[0028] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. However, it should be noted that the following examples are not intended to limit the present invention.

[0029] This invention mainly proposes an image quality assessment method for specific image analysis, please refer to figure 1 Shown is an image quality assessment method for specific image analysis proposed by the present invention. The process of this embodiment mainly includes the following steps: In step 101, an image of a test chart in an actual scene is captured. In step 102, the preprocessing of the test chart image, this step 102 is for the image taken by a test chart placed in the actual scene, to perform processing such as color gray scale, image blurring, image binarization, etc., to make the image suitable for subsequent steps. Please refe...

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Abstract

The invention discloses a method of evaluating image quality and a test graph used for evaluating the image quality. The method comprises the steps of: providing the test graph, wherein the test graphis placed in an actual scene and comprises a plurality of positioning graphics and a plurality of quality test graphics; picking an image of the test graph in the actual scene; finding the pluralityof positioning graphics in the image of the test graph to determine an orientation of the image of the test graph; and identifying images of the plurality of quality test graphics in the image of thetest graph, and evaluating quality of the images of the plurality of quality test graphics.

Description

technical field [0001] The invention relates to a method for evaluating image quality, in particular to a method for evaluating the quality of an image captured in an actual scene. Background technique [0002] In recent years, with the increase in the number of surveillance cameras, the application of image analysis has also increased rapidly, such as face recognition, license plate recognition, and abnormal behavior analysis. However, each type of image analysis requires different image angles and image quality requirements, so the deployment requires a higher degree of professionalism. For example, face recognition requires the minimum face size to meet the requirements, and license plate recognition requires the minimum character height to meet the requirements. Another example is the license plate recognition camera. Since the vehicle moves faster, the shutter also needs to be set at a faster speed to avoid blurring the obtained license plate image. On-site deployment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00
CPCH04N17/00
Inventor 蓝元宗倪嗣尧吴国祯
Owner GORILLA TECH
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