The design of a portable fusion system of an uncooled infrared bolometer and a CCD camera

Rongguo Fu; Zhenwei Du; Ming Zhou; Jiangnan Chen; Hong Zhang; Miao He; Tongchun Sun; Wenran Yang; Hao Zhang

doi:10.1117/12.2518355

7 May 2019 The design of a portable fusion system of an uncooled infrared bolometer and a CCD camera

Rongguo Fu, Zhenwei Du, Ming Zhou, Jiangnan Chen, Hong Zhang, Miao He, Tongchun Sun, Wenran Yang, Hao Zhang

Proceedings Volume 11018, Signal Processing, Sensor/Information Fusion, and Target Recognition XXVIII; 110181G (2019) https://doi.org/10.1117/12.2518355
Event: SPIE Defense + Commercial Sensing, 2019, Baltimore, MD, United States

Abstract

A portable device of image fusion system of infrared and visible light image is designed. The device is composed of image collecting, process and display part. Image collecting part includes an uncooled infrared bolometer and a CCD camera. The response wavelength of uncooled infrared bolometer is 8-14μm and that of CCD is 0.2~1.1μm. Image process part is a complex structure composed of DSP642, TVP5150, SAA7121H, SDRAM storage and other electronic components, while displaying part is computer or LCD. The focus length of uncooled infrared bolometer is 50mm and that of CCD is 8~50mm to match bolometer. The optical axises of them are rectified to parallel carefully. A multi-dimensional mechanical structure is designed specially to fit for the uncooled infrared bolometer and CCD camera, so as to modify the parallel of axises. The rectifying is carried under an optical system of 3 meter focus length, the resolution angle is 0.05mrad. Images of bolometer and CCD are decoded in the input circuit of TVP5150 and form the digital signal of BT.656, then the decoded videos are transferred to DSP642 circuit. Here the images of bolometer and CCD are fused under the weighted average algorithm, the output image is encoded to PAL format in order to keep the real time response, the complex fusing algorithm such as Laplace pyramid or wavelet isn’t implanted in the DSP642 at present. Theoretically the fused image includes more information than single infrared or CCD image, in order to verify the fusing result, a group of experiments are carried to detect man behind bush. By comparing three images of infrared, visible, fusing images, a primary conclusion is obtained that the weight coefficient will influence the fusing effect in different circumstances.

Citation Download Citation

Rongguo Fu, Zhenwei Du, Ming Zhou, Jiangnan Chen, Hong Zhang, Miao He, Tongchun Sun, Wenran Yang, and Hao Zhang "The design of a portable fusion system of an uncooled infrared bolometer and a CCD camera", Proc. SPIE 11018, Signal Processing, Sensor/Information Fusion, and Target Recognition XXVIII, 110181G (7 May 2019); https://doi.org/10.1117/12.2518355

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