Splicing method for images shot by multiple cameras
An image and camera technology, applied in the field of splicing of images taken by multiple cameras, can solve the problems of inability to measure the workpiece, unable to accommodate the workpiece, and the measurement results cannot truly reflect the status of the workpiece.
Active Publication Date: 2021-09-28
CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH
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Problems solved by technology
[0003] Due to the limited shooting range of a single camera, for long workpieces such as pipes and fiber cloth, the field of view of a single camera cannot accommodate the entire workpiece, and can only obtain partial images of the workpiece, so the image measurement technology cannot measure the entire workpiece. Measurement can only measure part of the workpiece, and the measurement result cannot really reflect the state of the workpiece
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[0045] 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 some, not all, embodiments of the present invention.
[0046] In the description of the present invention, it should be noted that the terms belonging to "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention.
[0047] A method for spli...
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The invention relates to the technical field of image measurement, in particular to a splicing method for images shot by multiple cameras. The method includes the following steps: 10, erecting n industrial cameras; 20, placing a calibration plate with a calibration point in the visual field of each industrial camera; 30, using n industrial cameras to carry out photographing, and generating n workpiece images; 40, respectively mapping the n workpiece images, and forming n mapped images on one plane; 50, measuring the actual distance relation among the calibration points on all the calibration plates, and calculating the mapping distance relation among the calibration points in the mapping image according to the actual distance relation; and 60, by taking the first mapping image as a reference, placing the other mapping images on the first mapping image according to the mapping distance relationship in sequence to complete image splicing. The invention provides a splicing method for images photographed by a plurality of cameras, and the method can obtain the overall image of a workpiece with a relatively long length.
Description
technical field [0001] The invention relates to the technical field of image measurement, in particular to a splicing method for images taken by multiple cameras. Background technique [0002] Image measurement technology is a new technology that uses the image of the workpiece captured by the camera as the carrier of information transmission, and analyzes and studies the imaging image of the object based on the principle of vision and digital image processing technology, so as to obtain the information that needs to be measured. It has been successful at present. Applied in many fields. The image measurement method has the advantages of non-contact, high speed, large dynamic range, rich information, etc., and has been valued by the measurement field at home and abroad. [0003] Due to the limited shooting range of a single camera, for long workpieces such as pipes and fiber cloth, the field of view of a single camera cannot accommodate the entire workpiece, and can only ob...
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IPC IPC(8): G06T3/40G06T7/80
CPCG06T7/80G06T3/4038G06T2200/32
Inventor 谈昆伦季小强
Owner CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH