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A real-time capture camera for dynamic coordinates of spatial markers

A technology of real-time capture and dynamic coordinates, which is applied in the direction of TV, color TV parts, TV system parts, etc., can solve the problems of high algorithm complexity and poor real-time performance, and achieve a large amount of calculation, fast processing speed, and complex high degree of effect

Inactive Publication Date: 2020-02-18
DALIAN UNIV OF TECH
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Problems solved by technology

[0003] When the image size is 1280×720, it takes more than 50ms for the traditional image processing algorithm to process an image according to the median filter, edge detection and center of gravity calculation, the real-time performance is poor, and the algorithm complexity is high

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  • A real-time capture camera for dynamic coordinates of spatial markers
  • A real-time capture camera for dynamic coordinates of spatial markers
  • A real-time capture camera for dynamic coordinates of spatial markers

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Embodiment Construction

[0034] The steps included in the present invention will be described in detail below in combination with the technical solution of the present invention and the accompanying drawings.

[0035] Step 1, CMOS image sensor circuit connection

[0036]The FPGA of Xilinx Company writes the set parameters into the register of the CMOS image sensor through the SCLK clock and SDATA data signal of the IIC bus. Including settings such as working mode, image and gain size. FPGA also provides the main input clock EXTCLK of 12.5MHz to the sensor, and then the pixel clock PIXCLK of 96MHz is multiplied by the on-chip phase-locked loop of the sensor. The FPGA also provides an exposure trigger signal TRIGGER to control the image frame rate. Whenever TRIGGER is at a low level, a frame of image will be triggered, and the length of the low level time determines the length of the exposure time. The image sensor transmits the output image data DOUT, the output pixel clock PIXCLK, the frame valid si...

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Abstract

The invention discloses a real-time capture camera for dynamic coordinates of spatial markers. First, the CMOS image sensor transmits signals such as real-time image data, frame valid signal, row valid signal and output clock to the FPGA chip. The FPGA then processes the image data in parallel. The image data or the calculated real-time coordinate data of dynamic markers can be sent to Gigabit network. Then the gigabit network transmits the data to the host computer. Finally, the MFC interface of the upper computer displays images or marks the movement trajectory of the center of matter in real time. Through the above method, the present invention can realize real-time display of images with a resolution of 1280×720 and 100 frames per second. It is also possible to calculate the centroid coordinates of more than 200 dynamic markers in real time under the condition of an image resolution of 1280×720 and 100 frames per second.

Description

technical field [0001] The invention belongs to the technical field of FPGA embedded image processing, and relates to a camera for real-time capturing of dynamic coordinates of spatial markers. Based on FPGA parallel image processing, the spatial coordinates of more than 200 dynamic markers in the image can be calculated in real time at a frame rate of 100 frames and a high resolution of 1280×720. Background technique [0002] Motion capture systems are widely used in animation production, athlete training, interactive games and other fields. In animation production, by capturing the actions of real people and then performing three-dimensional animation synthesis, the efficiency of animation production can be greatly improved, the cost can be reduced, and the level of animation production can be improved. By capturing the movements of athletes, it is easy to quantify, combined with the principles of human physiology and physics, to study improved methods, so that sports tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/374
CPCH04N25/767H04N25/76
Inventor 李明伟毕明军
Owner DALIAN UNIV OF TECH
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