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Log-polar space based image object size and rotation estimation calculation method

A technology of rotation estimation and calculation method, applied in the field of computer vision, to achieve fast processing, improved effectiveness and timeliness, and good robustness

Active Publication Date: 2017-12-26
ZHEJIANG UNIV
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Problems solved by technology

[0006] In order to solve the problems existing in the background technology, the present invention proposes an image object size and rotation estimation calculation method based on the logarithmic polar space, in order to solve the problem of quickly and accurately estimating the object relative to the model learned by the algorithm from the image or video sequence Issues with size and rotation changes

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  • Log-polar space based image object size and rotation estimation calculation method

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[0054] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0055] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0056] Embodiments of the present invention are as follows:

[0057] Such as figure 1 As shown, the system modules specifically implemented in the embodiment are:

[0058] The input module is used to receive the image data or video sequence provided by the user, and then send it to the object size rotation estimation module for estimation.

[0059] The object size rotation est...

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Abstract

The invention discloses a log-polar space based image object size and rotation estimation calculation method. A to-be-detected image and a template image are input and log-polar transformation is performed on the to-be-detected image. Characteristic extraction is performed on the object image subjected to transformation and a characteristic image is acquired. A response diagram of the image object relative to the size and rotation change of the template image is obtained through calculation by adopting a phase correlation method by utilizing extracted characteristics. Relative displacement is calculated through a response value in the perimeter zone of the maximal value in the response diagram and the coordinate position of the maximal value. The size and the rotation change of an object in the to-be-detected image relative to an object in the template image are calculated through the relative displacement. According to the invention, the log-polar space is innovatively adopted as an image operation space, so that the size and rotation change of the object are estimated effectively and quickly, so that quick algorithm support is provided for upper layer application.

Description

technical field [0001] The invention relates to the field of computer vision and related technologies of image processing, in particular to a calculation method for estimating the size and rotation of an image object based on a logarithmic polar space. Background technique [0002] After years of exploration and development, computer vision and image processing related technologies have application scenarios in many fields such as artificial intelligence, machining, transportation, entertainment, medical care, security, and military. Accurate and fast image object size and rotation estimation is not only a basic research part in the field of computer vision, but also an important part of application fields such as object tracking and object detection. The present invention is dedicated to proposing a fast and effective calculation method for image object size and rotation estimation. Image object size and rotation estimation is the research foundation and premise of object ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/246G06T7/60G06T7/73G06T3/60
CPCG06T3/604G06T7/246G06T7/60G06T7/73G06T2207/20056G06T2207/10016G06T2207/10004G06T7/62G06T7/74G06T7/248
Inventor 朱建科李洋
Owner ZHEJIANG UNIV
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