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Method and apparatus for controlling the degree of compression of a digital image

A technology of digital image and compression degree, applied in the direction of image analysis, image communication, image coding, etc., can solve the problems of low compression degree, inappropriate identification consumption bit rate, consumption bit rate, etc., and achieve the effect of reducing these problems.

Active Publication Date: 2020-12-04
AXIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many cases, this is an advantageous way of encoding an image, but in some cases it can lead to the fact that parts of an image that include uninteresting, but moving objects (such as moving foliage of a tree) will be encoded with a lower degree of compression , and thus consumes unnecessary bitrate (since it is not needed)
Additionally, noise in images is improperly identified as motion and consumes bitrate
Poor image quality due to, for example, darkness, rain, snow or fog creates similar problems

Method used

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  • Method and apparatus for controlling the degree of compression of a digital image
  • Method and apparatus for controlling the degree of compression of a digital image
  • Method and apparatus for controlling the degree of compression of a digital image

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Embodiment Construction

[0047] figure 1Two digital images 102, 118 representing a first view and a second view, respectively, of a scene are shown by way of example. In this example, first digital image 102 and second digital image 118 are captured by a stereo camera (not shown). The first digital image 102 is captured by the left sensor in the stereo camera and the second digital image 118 is captured by the right sensor in the stereo camera. The scene includes objects (eg, people) 116 that are closer to the camera and objects (eg, people) 112 that are further away from the camera. The scene further includes a tree 104 including a trunk 108 and leaves 106 . Two people 116 , 112 and tree 104 stand on lawn 114 . The images 102 , 118 further show a sky 120 . Due to the stereoscopic effect (or parallax effect, if the objects (i.e., the person 116 and the tree 104) are at close range, the first digital image 102 and the second digital image 118 will give two significantly different views. This is why...

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Abstract

The present invention relates generally to a method and apparatus for controlling the degree of compression of a digital image, and more particularly to such a method and apparatus that receives (S802) a stereoscopic digital image, and Control (S810) the degree of compression of the digital image using the block matching characteristic between them.

Description

[0001] technical content [0002] The present invention generally relates to a method and apparatus for controlling the degree of compression of a digital image. Background technique [0003] In image processing, there is an ongoing effort to start reducing the bit rate or image size while maintaining a perceivable image quality. Typically, when encoding an image for surveillance purposes, objects with motion can in many cases be prioritized in some way over static objects, for example image parts that include a walking person versus a road surface that includes the person walking on it will be assigned a higher bitrate (less compression) than the image portion of the . In many cases, this is an advantageous way of encoding an image, but in some cases it can lead to the fact that parts of an image that include uninteresting, but moving objects (such as moving foliage of a tree) will be encoded with a lower degree of compression , and thus consume unnecessary bitrate (since n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/85H04N19/179H04N19/176H04N19/597H04N13/161
CPCH04N19/176H04N19/179H04N19/597H04N19/85H04N13/161H04N19/139H04N19/137H04N19/136H04N19/182G06T7/55G06T7/337G06T9/00G06F18/22H04N19/426
Inventor 范星尼克拉·丹尼尔松
Owner AXIS