Light spot imaging device
An imaging device and light spot technology, which can be used in image communication, TV, color TV parts, etc., can solve the problems of accuracy error of measurement results, etc.
Inactive Publication Date: 2016-05-11
SUZHOU VR ROBOT TECH CO LTD
View PDF4 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
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
[0033] The details of the present invention can be understood more clearly with reference to the accompanying drawings and the description of specific embodiments of the present invention. However, the specific embodiments of the present invention described here are only for the purpose of explaining the present invention, and should not be construed as limiting the present invention in any way. Under the teaching of the present invention, the skilled person can conceive any possible modification based on the present invention, and these should be regarded as belonging to the scope of the present invention.
[0034] refer to Figure 8 Shown, a spot imaging device, it comprises:
[0035] A CCD photosensitive device, which is used to sense an optical signal based on the light spot to obtain an electrical signal, and is used to obtain at least one set of data frames based on the electrical signal;
[0036] A calculation unit, which is used to calculate the position P of the max...
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 relates to a light spot imaging device. The light spot imaging device comprises a CCD (Charge Coupled Device) photosensitive device used for sensing based on an optical signal obtained based on a light spot to obtain an electrical signal, and obtaining at least one group of data frames based on the electrical signal; a calculation unit used for calculating a position P point with a maximum gray value in one frame and a gray value MAX of the P point from a frame start direction to a frame tail direction; a first comparison unit used for comparing the gray value MAX of the P point with a preset over exposure threshold SAT; a second comparison unit used for that if the MAX is greater than or equal to the SAT, taking the P point as the center and taking q pixel positions around the P point, and comparing the q pixel positions with a preset threshold SECTH; and a calculating unit. In view of the lacks of the prior art, the main purpose of the invention is to provide the light spot imaging device, and a calculation method for calculating an imaged laser spot center under the condition that a CCD linear array photosensitive device in laser triangle measurement is overexposed, and the method has a very important significance in guaranteeing a laser scanning vision system to acquire a high precision measurement result in a very large dynamic range.
Description
technical field [0001] The invention relates to a light spot imaging device, and in particular to a method for estimating the light spot position when a CCD photosensitive device of a laser scanning vision system is overexposed, which can improve the accuracy of the vision system in the case of overexposure. Background technique [0002] In the application of ordinary triangulation laser ranging sensor using CCD linear array photosensitive device, the condition and angle of the object surface are generally stable, at this time, the exposure time can be automatically adjusted to make the CCD photosensitive device work in its normal range Inside. At this time, the calculation of the spot position can use the technique of weighting and taking the center of gravity of the light intensity as the center of the spot. [0003] When the triangulation-based laser scanning vision system is used to scan workpieces or objects, the characteristics and angles of the surface of the workpie...
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 IPC IPC(8): H04N5/225H04N5/235H04N5/372
CPCH04N23/55H04N23/73H04N25/71H04N23/00H04N23/70
Inventor 张炯
Owner SUZHOU VR ROBOT TECH CO LTD