Circuit board component positioning method and positioning device based on feature point matching
A technology of feature point matching and positioning method, which is applied in the direction of instrumentation, image data processing, calculation, etc., and can solve problems such as slow calculation speed, affecting component detection and identification, and narrow application range
Pending Publication Date: 2018-03-30
FOSHAN UNIVERSITY
View PDF15 Cites 11 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the working principles of the above three methods are relatively simple, the application range is narrow, and the calculation speed is slow, so they are not suitable for circuit board detection on the assembly line.
For example, a Chinese patent on a method for precise positioning and detection of circuit board components based on image features (application number: CN103217438A), the patented technical solution is based on the SURF algorithm feature point matching, first extract the circuit board template picture and the circuit board picture to be tested Feature points, and then register the two images, and feature point extraction and matching are the key to image registration and circuit board component positioning. Once the feature points are incorrectly matched, the coordinate positions of the components on the circuit board image will be wrong. Affect the next step of component detection and identification
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] 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 only part of the embodiments of the present invention, 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.
[0026] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.
[0027] In addition, if there are descriptions involving "first", "second" and ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a circuit board component positioning method based on feature point matching. First, a high-definition image of a circuit board template is collected by a camera and transmitted to a computer, and the feature points of the circuit board template are extracted and saved to the computer. Then, a conveyor belt is opened to transmit a work piece under test from one end of the conveyor belt to the other end, the camera collects a high-definition image of a circuit board under test and sends the high-definition image to the computer, and the feature points of the circuit board under test are extracted. Finally, the computer compares the feature points of the images of the circuit board template and the circuit board under test to get a mapping relation between the circuitboard template and the circuit board under test, in order to position the components on the circuit board. The invention further discloses a positioning device using the circuit board component positioning method based on feature point matching Through the technical scheme, the components on the circuit board can be quickly and accurately positioned, and accurate location information can be provided for component detection in the next step.
Description
technical field [0001] The invention relates to the technical field of circuit board detection, in particular to a circuit board component positioning method and positioning device based on feature point matching. Background technique [0002] As an important part of modern electronic equipment, the quality of the circuit board directly affects the performance of the product. During the production process of the circuit board, due to some process problems in the welding process, there may be defects such as missing, offset, and wrong parts on the circuit board. When the above defects occur, the quality and quality of the circuit board will inevitably be affected. Safety. Therefore, inspection of circuit boards and timely error correction can avoid scrap, improve quality, and reduce loss. [0003] In the traditional circuit board production line, the assembly line continuously transmits the circuit boards to be tested, and the staff on the assembly line need to check whethe...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/73
CPCG06T7/001G06T7/75G06T2207/10004G06T2207/30141
Inventor 王茗祎熊志航曾亚光韩定安熊红莲谭海曙吕秋浩
Owner FOSHAN UNIVERSITY