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Prioritizing in segment matching

A part of the pixel, part of the boundary technology, applied in the direction of image analysis, equipment, television, etc., can solve the problem of time-consuming and expensive calculation, and the solution is not accurate enough

Inactive Publication Date: 2005-11-23
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the calculation is still time-consuming and expensive, and for some applications, the obtained solution of M is not accurate enough

Method used

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  • Prioritizing in segment matching
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  • Prioritizing in segment matching

Examples

Experimental program
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Embodiment Construction

[0017] In the following example of the invention, the matching of two images will be explained. These images may be consecutive images from a video stream, but the invention is not limited thereto. These images are digital images containing image pixels and are defined as two 2-dimensional digital images I 1 (x, y) and I 2 (x, y). Among them, x and y indicate the coordinates of each independent pixel in the image.

[0018] The matching of these two images involves computing a pair of functions M=M x (x,y) and M=M y (x, y). The definition of M is the same as before, that is, the image I 1 Each pixel in the image I is mapped to 2 A pixel in .

[0019] I 1 (x, y) = I 2 (x+M x (x, y), y+M y (x, y))

[0020] According to the invention, the construction method of M is modified so that for groups of pixels with similar motion, the function M is constant, and the previous definition of M is modified as:

[0021] I 1 (x, y) = I 2 (x+M x (G(x,y)), y+M y (G(x,y)))

[0...

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Abstract

A method for matching digital images, including regularization of image features of a first digital image, composed of pixels, providing a second digital image, composed of pixels, defining a finite set of candidate values, wherein a candidate value represents a candidate for a possible match between image features of the first image and image features of the second image, establishing a matching penalty function for evaluation of the candidate values, evaluating the matching penalty function for every candidate value, selection of a candidate value based on the result of the evaluation of the matching penalty function, regularization of the first image by segmentation of the first image, including assigning at least part of the pixels of the image to respective segments, determining a pixel importance parameter for at least part of the pixels of a segment, the pixel importance parameter representing the relative importance of each of the pixels, and establishing the matching penalty function to be at least partially based on the pixel importance parameter.

Description

technical field [0001] The invention relates to a method according to the introduction of claim 1 . technical background [0002] Matching of two or more images is used in image processing, which involves determining matching parts in consecutive images. Image matching is a fundamental step in several areas of image processing, such as depth reproduction, image data compression, and motion analysis. [0003] The matching process includes determining image features in a first location in the first image, and determining the location of the image features in the second image. Difference information in position between image features in the first and second images, such as translation or rotation, can be used in later processing. For example, a translation of an image feature between two successive images can be used to obtain a velocity magnitude of an object associated with that image feature. [0004] Image matching can be performed using context-free processing, implemen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00H04N7/26H04N7/32
CPCH04N19/00624G06T7/0028G06T7/0065G06T7/2033H04N7/26797H04N19/543G06T7/33G06T7/55G06T7/246G06T7/00
Inventor P·维林斯基C·W·A·M·范奥弗维尔德F·E·埃恩斯特
Owner KONINK PHILIPS ELECTRONICS NV