Star image registration and target track extraction method based on NoC framework and device thereof
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A technology of target trajectory and extraction method, applied in the fields of image processing, astronomical observation and navigation, and many-core parallel acceleration
Active Publication Date: 2016-06-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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[0010] In view of this, the technical problem to be solved in this application is to provide a method and device for star map registration and target trajectory extraction based on NoC architecture, which can simultaneously perform high-precision image registration and The function of extracting the precise trajectory of the target, the device is not only compatible with the standard TCP / IP protocol and HDMI interface protocol, and the system runs under the Linux operating system, so it has strong portability and effectively overcomes the existing technologies and methods It is difficult to carry out high-precision star map registration and precise trajectory extraction of small moving objects in space, and the existing CPU-based architecture platform and embedded multi-core system composed of a small number of cores are difficult to perform real-time complex Disadvantages of handling
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Embodiment 1
[0080] see figure 1 Shown is a specific embodiment of a NoC architecture-based star map registration and target trajectory extraction method described in this application. The method described in this embodiment includes the following steps:
[0081] Step 101, camera calibration: fix the two cameras on the gimbal, and let the two cameras fixed on the gimbal point to the same starry sky area by controlling the rotation of the gimbal; set the aperture, shutter, ISO and The parameters including the exposure time are adjusted to the same value; through manual calibration, the two cameras are in the same field of view;
[0082] Step 102, time registration: when the camera shooting task has started and the moving target to be detected has not yet appeared in the starry sky, perform star map registration; after the star map registration is completed, wait for the target to enter the field of view, and then perform target detection;
[0083] Step 103, preprocessing: extracting star p...
Embodiment 2
[0129] see figure 1 with Figure 5 , the present invention also provides a device for star map registration and target trajectory extraction based on NoC architecture, characterized in that it includes:
[0130] The camera calibration unit is used to fix the two cameras on the gimbal, and make the two cameras fixed on the gimbal point to the same starry sky area by controlling the rotation of the gimbal; the two cameras include aperture, shutter, ISO and The parameters including the exposure time are adjusted to the same value; through manual calibration, the two cameras are in the same field of view;
[0131] Time registration unit: It is used to perform star map registration when the camera shooting task has started and the moving target to be detected has not yet appeared in the starry sky; after the star map registration is completed, wait for the target to enter the field of view, and then perform target detection;
[0132] Preprocessing unit: used to extract the star p...
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Abstract
The application discloses a star image registration and target track extraction method based on an NoC framework and a device thereof. The method comprises the steps of camera calibration, time registration, preprocessing, space registration and movement track extraction. According to the method and the device, functions of high-precision image registration and target precise track extraction of two paths of 1080p sky background videos can be completed simultaneously. The device is compatible with a standard TCP / IP protocol and an HDMI interface protocol, and the system operates under a Linux operating system so that the device has high transportability, and the defects in the prior art that the existing method has difficulty in performing high-precision star image registration and precise track extraction of small space movement targets and the existing platforms based on a CPU framework and the embedded multicore systems composed of a few cores have difficulty in performing real-time complex processing on two paths of 1080p video data streams can be effectively overcome. Meanwhile, the device also has the advantage of low power consumption.
Description
technical field [0001] The present application relates to the technical fields of image processing, astronomical observation and navigation, and many-core parallel acceleration. Specifically, it relates to a method and device for star map registration and target trajectory extraction based on NoC architecture. Background technique [0002] Star map registration is the process of precise star point matching in the same starry sky background area, aiming at the problem of geometric deformation in the images obtained by multiple sensors at different time periods and different imaging angles of view. Space star point small target trajectory extraction is a process of target positioning and target search between a group of video sequences, so as to accurately extract the target movement trajectory. At present, star map registration and small space object trajectory extraction are widely used in various fields such as space object observation, celestial navigation, remote sensing,...
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