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Shadow zone cutting method of two-dimensional color scene

A shaded area, colored technology, applied in image analysis, image data processing, instruments, etc.

Inactive Publication Date: 2006-08-16
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an improved two-dimensional color scene shadow for existing shadow segmentation methods that require prior knowledge about scenes, objects, lighting, etc., or based on the geometry, brightness, and color attributes of the shadow itself. Region Segmentation Method

Method used

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  • Shadow zone cutting method of two-dimensional color scene
  • Shadow zone cutting method of two-dimensional color scene
  • Shadow zone cutting method of two-dimensional color scene

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Embodiment Construction

[0031] A specific embodiment of the present invention is: the original image of this example is as figure 1 shown, yes figure 1 In the color digital image shown, the shaded area is segmented according to the fact that the shaded area has a significantly high hue value H, and that there are differences in the three-component light intensity of red R, green G, and blue B between the shaded area and the non-shaded area, and the specific steps are as follows:

[0032] (4) Color space conversion computer hue value H: the hue value of the HSV color space is determined by the red R, green G, and blue B three components of the RGB color space:

[0033]

[0034] in, θ = arccos { 1 2 [ ( R - G ) + ( ...

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Abstract

A two-dimensionally multicolor scene shadow area division method. It is dividing the shadow area according to the obvious colorific value H in the shadow area and the difference between the three luminous intensity namely red R, green G and blue B in the shadow area and the unshaded area. The invention can improve the character of agility and convenient for the multicolor data image analysis and aim.

Description

technical field [0001] The invention relates to a two-dimensional color scene shadow area segmentation method, which is used for color digital image analysis and target extraction. It belongs to the technical field of intelligent information processing. Background technique [0002] When objects in the scene are illuminated by light, shadows are formed when objects completely or partially block direct light. The existence of shadows will affect image segmentation, target tracking and recognition, etc. Identifying shadows in an image can provide information about the shape and relative position and surface features of objects in the scene. Existing shadow segmentation methods can be divided into two categories: one is model-based, and the generated model often requires prior knowledge about scenes, objects, lighting, etc., and the algorithm can only be used for the recognition and classification of shadows of simple objects, such as: buildings, vehicles, etc. The second i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/34G06T7/00
Inventor 管业鹏
Owner SHANGHAI UNIV
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