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

A positioning method and sub-pixel technology, which can be used in image enhancement, image analysis, image data processing, etc., and can solve the problems of low parameter accuracy and discretization of positioning results.

Active Publication Date: 2021-12-28
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.

Method used

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  • Image sub-pixel matching and positioning method and system, equipment and medium
  • Image sub-pixel matching and positioning method and system, equipment and medium
  • Image sub-pixel matching and positioning method and system, equipment 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 and system, equipment and a medium. The image sub-pixel matching and positioning method comprises the steps: preprocessing a preset template image and a target image; carrying out pixel-level similarity rough matching on the pre-processed preset template image and the target image, and obtaining rough matching translation coordinates and a rough matching rotation angle; taking the coarse matching translation coordinates and the coarse matching rotation angle as initial parameters of a cost function in a preset similarity matching model, and determining a loss value corresponding to the similarity of the sub-pixel level between the preset template image and the target image through the cost function with the initial parameters; when the loss value meets a convergence condition, taking the initial parameter as a final positioning result parameter of the target image; and performing preset positioning operation on the preset positioning object according to the final positioning result parameter. According to the method and system, the problem of accuracy loss caused by discretization of translation coordinates and rotation angles can be effectively avoided, and the positioning accuracy is improved.

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 Applications(China)
IPC IPC(8): G06T7/00G06T7/70G06K9/32G06K9/62G06T3/60
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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