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A Fast Matching System of Full Field Dense Points

A dense and fast technology, applied in resource allocation, multi-program device, program control design, etc., to achieve the effect of improving the matching speed

Active Publication Date: 2020-04-28
XI'AN PETROLEUM UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although there is some research on the hardware implementation method of the search matching algorithm at home and abroad, there are still many places to be improved in this method.

Method used

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  • A Fast Matching System of Full Field Dense Points
  • A Fast Matching System of Full Field Dense Points
  • A Fast Matching System of Full Field Dense Points

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] see figure 1 , the reference image memory module M001 and the target image memory module M002 serve as image data cache modules to cache captured image data. The reference image memory module M001 and the target image memory module M002 use two memories for storage respectively. The memory control module M004 inside the processor is connected to them to control the reading and writing of the two image memory modules. The memory control module is mainly divided into the following Three parts:

[0027] 1) Phase-locked loop. The memory chip itself requires a driving clock and a memory control clock, requiring two clock signals in total. In order to ensure that the read / write operation of the memory is in the stable period of the output data of the controller, a fixed phase difference needs to be maintained between the driving clock and the control cloc...

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Abstract

The invention discloses a full-field dense-point quick-matching system. Captured image data are cached through a reference image memory module and a target image memory module. A search sub-area full-template sum-of-square module and a search sub-area local-template sum-of-square module are set for the system at the same time. Output results of a reference sub-area local-template sum-of-square module, the search sub-area local-template sum-of-square module and a local-template sum-of-product module are input into a local-template correlation coefficient calculation module to obtain a local-template correlation coefficient. The local-template correlation coefficient is input into a threshold comparison module to obtain relevance of a current matching window and a local template. Local-template matching eliminates a large number of non-matching windows. A time-sharing multiplexing method is adopted to carry out multiplexing on a multiplier array if full-template calculation needs to be carried out after threshold comparison. Completing full-template calculation of the window in clock cycles is guaranteed, and costs of algorithm hardware realization are greatly reduced.

Description

technical field [0001] The invention relates to a digital speckle technology image processing system, in particular to a full-field dense point fast matching system. Background technique [0002] The digital speckle correlation method is the most complex calculation in the process of object three-dimensional information acquisition. It obtains mechanical properties such as deformation by performing correlation calculations on the displacement of the measured object before and after deformation or two speckle field images before and after deformation, as One of the visual measurement methods, the digital speckle correlation measurement method has the advantages of full-field non-contact, high precision, and high stability. It has become an important measurement method in the field of 3D deformation and shape measurement, but its computational complexity is high. , slow speed, how to reduce its computational complexity and improve its computational processing speed has become ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/583G06F9/50
CPCG06F9/5011G06F16/583
Inventor 苏亚丽张国和屠德成黄凯梁峰
Owner XI'AN PETROLEUM UNIVERSITY
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