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Efficient Implementation Method of Normalized Correlation Image Template Matching

An implementation method and image template technology, applied in the field of image processing, can solve the problems of large area occupied by logic resources and low template matching efficiency, and achieve the effect of efficient utilization

Active Publication Date: 2019-01-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0011] The technical problem to be solved by the present invention is to aim at the deficiency of the above-mentioned background technology, and provide an efficient implementation method of normalized related image template matching, which further reduces the consumption of logic resources, and can further improve the operation speed, reduce power consumption and cost, and solve the existing problems There are technical problems such as low efficiency of template matching and large area occupied by logic resources

Method used

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  • Efficient Implementation Method of Normalized Correlation Image Template Matching
  • Efficient Implementation Method of Normalized Correlation Image Template Matching
  • Efficient Implementation Method of Normalized Correlation Image Template Matching

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Embodiment Construction

[0063] Embodiments of the present invention will be described in detail below, and the embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention.

[0064] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein Explanation.

[0065] The normalized correlation coefficient formula used in the present invention is as follows:

[0066]

[0067] A represents the rea...

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Abstract

The invention discloses a method for efficiently realizing normalized correlation image template matching, and belongs to the technical field of image processing. The matching method is implemented by constructing a device including a high-speed correlation operation module, an external memory for template graph real-time graph data, a microprocessor, and a result memory, and adopts a parallel processing method to first calculate the normalized correlation of the search position template graph real-time graph in the current row and each column in parallel At the same time, the template graph data is reordered according to the row order of the real-time graph data when the next row is searched and calculated, and then the normalized correlation coefficient of the real-time graph of the template graph in the next row and column at the search position is calculated in parallel, which ensures that the real-time graph data and the template graph Under the premise of corresponding data, calculate the normalized correlation coefficient of the real-time map of the template map of each row and column at the search position.

Description

technical field [0001] The invention discloses an efficient implementation method of normalized correlation image template matching, in particular relates to a high-precision, high-real-time image template matching method and device capable of calculating normalized correlation coefficients efficiently and in parallel, belonging to the technical field of image processing . Background technique [0002] Template matching is mainly used to locate a target in an image. It has been widely used in image processing fields such as image registration and binocular stereo vision, and these image processing methods have been used in automatic target recognition, measurement based on binocular stereo vision, It has been widely used in military and civilian fields such as medical image fusion and satellite image monitoring. [0003] Template matching performs target localization by calculating the similarity measure between the template map known to characterize the target and all posi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62
CPCG06V10/751
Inventor 王小涛陈佳辉王邢波
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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