The invention discloses a method and device for superposing pictures in a video. The method and device for superposing the pictures in the video are used for achieving picture superposing on the video. The method includes the steps that first picture data to be superposed in the video are obtained; the format of the first picture data is converted into the YUY format, and second picture data are obtained; the superposing position of the first picture data in the video is determined; the data at the superposing position in the video are replaced by the second picture data. Due to the fact that the data to be superposed in the video are picturized and the corresponding data at the superposing position in the video are directly replaced, the superposed pictures are integrated with the video but not simply cover the video, the manufacturing cost can be saved, distribution and transmission of video streams are convenient, superposed information on the video can be watched in any player, and the user experience degree is improved.

Method and device for superposing pictures in video

Multispectral image display device

The invention provides calibration method, device and system. A BT656-format digital signal obtained by encoding calibration data is converted into a CVBS (composite video broadcast signal) by a digital-analog converter, and the CVBS is transmitted through a video signal line. The calibration data is transmitted not through the video signal line but a CAN (controller area network) bus. Tests show that the calibration data transmitted through the video signal line is at the speed of about 20.736Mbps, whereas the calibration data transmitted through the CAN bus in the prior art is at the speed up to 1Mbps. The transmission speed of the calibration data is more than 20 times of that of the calibration data transmitted through the CAN bus, and accordingly transmission time of the calibration data is shortened greatly and is allowed to satisfy modern production lines.

Calibration method, device and system

The invention discloses a multi-camera synchronous control device, which belongs to the technical field of machine visual sense The multi-camera synchronous control device comprises a processing module, an encoder signal input module, a triggering module, a parameter signal input module, and a synchronous control module The encoder signal input module is connected to the processing module and isused for sending coding signals generated by the encoder to the processing module; the triggering module is connected to the processing module and is used for sending triggering signals to the processing module; the parameter signal input module is connected to the processing module and is used for sending device parameter setting signals to the processing module; the synchronous control module is connected to the processing module and is used for outputting synchronous control signals generated by the processing module to each camera Consequently, the synchronous control of various camerascan be realized, and the line frequency of a line-scan camera can be adjusted through revising parameter setting signals

Multi-camera synchronous control device

The invention relates to a Camera-Link digital video information superimposing method belonging to the technical field of image processing. The method comprises the following steps of: (1) decoding serial Camera-Link digital video signals into parallel image data signals and three control signals through a decoding chip, and transmitting the decoded image data signals and the decoded control signals into an FPGA; (2) generating a line counter and a column counter of a digital image by using the FPGA, wherein the two counters can be used for modifying the pixel values in the image; (3) superimposing the reference data information to be superimposed to the assigned position in the image according to the reference data decoding protocol; and (4) transmitting the superimposed image data and the three control signals to a video coding chip to regenerate the Camera-Link digital video. The invention not only saves a channel for transmitting the reference data but also can ensure the strict alignment of the image and the reference data.

Camera-Link digital video information superimposing method

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Camera-Link digital video information superimposing method