Image sub-pixel matching and positioning method, system, device and medium

A positioning method and sub-pixel technology, applied in image analysis, image enhancement, graphics and image conversion, etc., can solve the problems of discretization and low accuracy of positioning result parameters

Active Publication Date: 2022-04-19
深圳市大族封测科技股份有限公司
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Problems solved by technology

[0004] Based on this, it is necessary to provide an image sub-pixel matching positioning method, system, equipment, and medium to solve the problems of low accuracy and discretization of positioning result parameters.

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  • Image sub-pixel matching and positioning method, system, device and medium
  • Image sub-pixel matching and positioning method, system, device and medium
  • Image sub-pixel matching and positioning method, system, device and medium

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. 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.

[0029] In one embodiment, as figure 1 As shown, an image sub-pixel matching positioning method is provided, including the following steps:

[0030] S10, collect the target image of the preset positioning object in real time and obtain the preset template image, and perform preprocessing on the preset template image and the target image; wherein, the preset positioning object may refer to the preset positioning object The object to be operated, such as...

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Abstract

The invention discloses an image sub-pixel matching and positioning method, system, equipment and medium. The image sub-pixel matching and positioning method includes: preprocessing a preset template image and a target image; preprocessing the preset template image Carry out rough matching of pixel-level similarity with the target image, and obtain the rough matching translation coordinates and rough matching rotation angles; use the rough matching translation coordinates and rough matching rotation angles as the initial parameters of the cost function in the preset similarity matching model, by having The cost function of the initial parameters determines the loss value corresponding to the sub-pixel similarity between the preset template image and the target image; when the loss value satisfies the convergence condition, the initial parameters are used as the final positioning result parameters of the target image; according to the final The positioning result parameter performs a preset positioning operation on the preset positioning object. The present invention can effectively avoid the problem of lack of precision caused by discretization of translation coordinates and rotation angles, and improves positioning precision.

Description

technical field [0001] The invention relates to the field of image data processing, in particular to an image sub-pixel matching and positioning method, system, equipment and medium. Background technique [0002] In the packaging industry of advanced semiconductor components, it is necessary to capture visual positioning images based on vision systems, perform visual matching positioning and detection on them, and use the positioning result parameters to control a series of operations that require extremely high displacement precision, such as die bonding and wire bonding. At the same time, this type of visual matching algorithm should have an extremely fast response speed to meet the needs of mass production, so as to fully reduce the consumption of manpower and time. [0003] At present, there is already a solution for traversing the template images and finding a matching template image, and then identifying and obtaining the parameters of the positioning result. With the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/70G06V10/24G06V10/74G06K9/62G06T3/60
CPCG06T7/001G06T7/70G06T3/60G06T2207/10004G06T2207/30148
Inventor 陈健桦李峥嵘罗波高云峰
Owner 深圳市大族封测科技股份有限公司
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