A geostationary orbit high-frame-frequency large-dynamic-range moving target detection method
A geostationary orbit and large dynamic range technology, applied in image data processing, instruments, calculations, etc., can solve the problems of low frame rate, target recognition efficiency, large data volume, etc., and achieve low cost, simple operation, and simple physical principles Effect
Active Publication Date: 2019-06-14
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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This method has a large amount of data and needs to collect data for the scene multiple times, so it has a lower frame rate and target recognition efficiency
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[0022] For common detection systems, if the integration time is too short to detect targets with low surface temperature, and increasing the integration time to make such targets visible, it will cause overexposure to high temperature targets such as moving targets, resulting in grayscale When the value is oversaturated, the target cannot be detected and identified.
[0023] Therefore, the present invention adopts the method of self-adaptively adjusting the integration time of the local area and outputting the data of the local area, and proposes a geostationary orbit high frame rate and large dynamic range moving target detection method, which is mainly used for infrared passive detection. The following is attached figure 2 The present invention will be described in further detail.
[0024] It should be understood that the specific embodiments and example data described here are only used to explain and facilitate the understanding of the present invention, and are not limited to...
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The invention discloses an earth stationary orbit high-frame-frequency large-dynamic-range moving target detection method. The earth stationary orbit high-frame-frequency large-dynamic-range moving target detection method comprises the steps that an earth stationary orbit infrared detection system is used for monitoring the earth; firstly, system integration time is initialized, so that the brightness cloud gray scale extreme value in a scene is about 70%-90% of a saturation value, and normal operation of a monitoring system is ensured. And when the pixel of the suspected target is detected, whether a gray value supersaturation phenomenon occurs in a local region of the target is judged, and if yes, the integration time is reduced to enable the gray value of the pixel to be in an unsaturated state. And then target identification and tracking are carried out, and adaptively the integral time of the pixel region corresponding to the target along with the movement of the target in the tracking process is adjusted to ensure that the target pixel is always in an unsaturated state. And finally, gray value data of a local area with the target pixel as the center at a high frame frequencyis output. The method can be used for simultaneous detection and tracking of multiple targets, and can maintain the characteristics of high-frame-frequency output and large-dynamic-range detection.
Description
Technical field [0001] The invention relates to a method for detecting a moving target with a high frame rate and a large dynamic range in a geostationary orbit. The method is mainly based on the adaptive adjustment of the integral time of the detector to realize the detection of a moving target with a high frame rate and a large dynamic range of multiple targets. This method can be used for simultaneous detection and tracking of multiple targets with high frame rate and large dynamic range. Background technique [0002] With the development and advancement of sensor technology and systems, high frame rate and large dynamic range imaging have received great attention in industrial, transportation, digital and medical imaging applications. Improving the dynamic range and output frame rate of detection systems has become a major issue. Research hotspots of enterprises and institutions. [0003] At present, the commonly used large dynamic range acquisition methods are divided into tw...
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Inventor 陈凡胜孙胜利于清华林长青
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI