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homography correction

A technology of homography and homography matrix, which is applied in image enhancement, image analysis, processor architecture/configuration, etc., can solve the problems of increasing computational complexity and computing time of pattern detection methods, so as to reduce computation and improve efficiency , the effect of reducing the amount of time

Active Publication Date: 2019-09-06
COGNEX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, perspective distortion tends to increase the computational complexity and computation time of pattern detection methods

Method used

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Embodiment Construction

[0051] In the following description, numerous specific details are set forth regarding systems and methods of the disclosed subject matter, the environments in which such systems and methods may operate, etc., in order to provide a thorough understanding of the disclosed subject matter. Still, it will be apparent to those skilled in the art that the disclosed subject matter may be practiced without these specific details and certain features that are well known in the art have not been described in detail to avoid obscuring the disclosed subject matter. Additionally, it will be appreciated that the examples provided below are exemplary and that other systems and methods are contemplated that exist within the scope of the disclosed subject matter.

[0052] The image may comprise a two-dimensional function whose value corresponds to a physical property of the object, such as brightness (radiant energy, reflectance, etc.), color, temperature, height above a reference plane, etc., ...

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Abstract

The present disclosure provides a multi-stage image mapping mechanism for mapping a distorted image to a corrected image. For example, a multi-stage image mapping mechanism can remove homography from a distorted image to reconstruct a corrected image in two stages: (1) a first stage where the distortion is partially removed from the distorted image to generate an intermediate image, and (2) where A second stage that removes residual distortion from the intermediate image to restore the rectified image.

Description

technical field [0001] Disclosed herein are devices, systems, and methods related to homography projection of rectified images for image processing applications. Background technique [0002] Digital images can be formed by many devices and used for many practical purposes. The device includes a camera with an image sensor operating on visible or infrared light, such as a charge coupled device (CCD) image sensor or a complementary metal oxide semiconductor (CMOS) image sensor, a line scan sensor, a flying spot scanner, Electron microscopes, X-ray devices including computed tomography (CT) scanners, magnetic resonance imagers, and other devices known to those skilled in the art. There are practical applications in industrial automation, medical diagnostics, satellite imaging for a variety of military, civilian, and scientific purposes, photographic processing, surveillance and traffic surveillance, document processing, and many other applications. [0003] To serve these ap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/50
CPCG06T5/50G06T2207/10004G06T1/20G06T1/60G06T3/18G06T5/80
Inventor 纳撒尼尔·博根
Owner COGNEX CORP
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