Digital airborne photography system
A kind of aerial photography and digital technology, applied in the field of aerial photography equipment, can solve the problems of out-of-sync exposure, low base height ratio of aerial photography, difficult high-precision correction and stitching of images, etc., to ensure the accuracy of imaging stitching, reduce difficulty, and avoid exposure Control the effect of desynchronization
Active Publication Date: 2009-09-23
PEKING UNIV
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Problems solved by technology
However, there are the following problems in the acquisition method of large-format images: 1. The base height ratio of aerial photography is low; 2. The non-strict central projection method seriously affects the plane and elevation accuracy of digital aerial photography; 3. Multi-sensor and multi-shutter control exposure Due to the problem of asynchrony, it is difficult to achieve high-precision correction and stitching of images
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[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0018] Such as figure 1 As shown, the present invention includes a large-diameter optical lens 1 with a controllable shutter device and an inner field of view splicing digital imaging back 2, the large-diameter optical lens 1 is located at the front end of the shooting, and the large-diameter optical lens can adopt the existing film type A high-precision large-aperture lens for aerial cameras. The digital imaging back 2 for inner field of view splicing is the core of the imaging processing of the present invention, and mainly includes a single-sided scattering optical device 21 , a photoelectric conversion module 22 , a multi-channel data storage module 23 , a master control module 24 , and a follow-up processing module 25 . In addition to the stitching digital imaging system 2 in the inner field of view, an auxiliary positioning system 3 and a power...
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The invention relates to a digital aerial photography system, which comprises a large-diameter optical lens with a controllable shutter and a spliced digital imaging back of the inner field of view; the spliced digital imaging back of the inner field of view includes a single-sided scattering optical device and a photoelectric conversion module , multi-channel data storage module and master control module; the single-sided scattering optical device is placed at the imaging surface of the large-aperture optical lens; the photoelectric conversion module is placed behind the single-sided scattering optical device, including CCD imaging sensor array, pulse generator, driver and A / D converter; imaging sensor array also includes an independent high-speed video image acquisition device; master control module includes a core controller, multiple imaging controllers, man-machine interface equipment, video switching unit, large aperture lens shutter trigger unit ; The photoelectric conversion of the imaging sensor array and the linkage control of the shutter trigger unit. The large-diameter optical lens of the present invention can adopt the high-precision large-diameter lens of the existing film-type aerial camera, and configure the digital imaging back of the present invention, so that the digital aerial camera can meet the requirements of aerial photography operations and processing.
Description
technical field [0001] The invention relates to an aerial photographic instrument, in particular to a digital aerial photographic system for acquiring large-format images. Background technique [0002] At present, the comprehensive digital development of remote sensing technology is no longer satisfied with the operation mode of scanning and inputting the film taken by aviation or aerospace platforms into the computer to form digital images, but pursuing the complete process from digital data acquisition to data preprocessing, storage, application and management. Digitizing. Especially on the data acquisition side, with the continuous development of electronic technology, ultra-long line array and ultra-large-format CCD sensors will continue to be developed, making the detection performance (resolution, imaging range, etc.) of digital cameras approaching traditional measurement machine. Digital aerial photography system is a new technology and an important development dire...
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IPC IPC(8): G01C11/00G01C11/02
Inventor 晏磊段晓辉赵世湖连宙辉武斌罗斌沈添天张红蕾吴亚坤
Owner PEKING UNIV