Multichannel real-time video splicing processing system
A technology of real-time video and processing system, applied in the field of image processing, can solve the problem of not meeting the real-time requirements of video splicing
Active Publication Date: 2014-06-11
南京多目智能科技有限公司
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[0010] In view of this, the present invention provides a multi-channel real-time video splicing processing system to solve the problem that the existing video splicing technology cannot meet the real-time requirements of video splicing under the condition of ensuring the splicing effect
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Embodiment 1
[0091] The flow of real-time video splicing processing disclosed in this embodiment is as follows: Figure 7 shown, including:
[0092] Step S1. Arrange 3 cameras of the same model with the same lens and focal length horizontally from left to right in sequence, fix the positions, and read in the raw image data in YUV format collected in real time, of which the left camera and the middle camera are two adjacent The images collected by the camera have about 30% overlapping in the horizontal direction, and the images collected by the middle camera and the right side of the camera also have an overlapping area of about 30% in the horizontal direction. Similarly, it can be expanded to more cameras;
[0093] The collected image is in YUV raw data format, which needs to be converted to RGB data format for later image processing. Its conversion formula is:
[0094] R G ...
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The invention relates to a multichannel real-time video splicing processing system and belongs to the field of real-time video image processing. The multichannel real-time video splicing processing system is characterized in that a model conversion parameter, a color brightness gamma correction coefficient, an optimal sewing line and a corresponding weight fusion matrix among multichannel video images under the current scene can be solved at an offline stage, so that a finally-fused panoramic video image can be smoothly transited in an overlapping area; at the real-time stage, the brightness value of an image can be adjusted by directly utilizing the gamma correction coefficient solved at the offline stage, CUDA (computed unified device architecture) in a server is used for executing the multithreading parallel projection conversion calculation and weighted fusion for the multichannel real-time video to generate a real-time panoramic video image. The system has the advantages that the corresponding parameters solved at the offline stage are directly utilized in the real-time stage, the computing speed can be increased by at least five times through the parallel programming of the CUDA, and a transitional zone of a sewing line between every two adjacent images is smoother compared with a traditional method.
Description
technical field [0001] The invention relates to the field of image processing, in particular to a multi-channel real-time video splicing processing system. Background technique [0002] With the advancement of electronic computer technology, computer image processing has developed rapidly in recent years, and has been successfully applied to almost all imaging-related fields, and is playing a very important role. 70% of the information transmitted by humans is visual information, and image information is an important medium and means of transmitting information. The range of pictures presented by a single camera is limited, which cannot better reflect the dynamic range of the panorama. Therefore, in order to better display the scene information, it is extremely necessary to improve the field of view of the video under the premise of ensuring the picture quality and real-time performance. Video stitching technology has broad application prospects, and has been widely used i...
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Inventor 刘李纬张银钱肖创柏
Owner 南京多目智能科技有限公司