Multi-charge coupled device group self-adaptive imaging instrument of cambered optical structure and method thereof

A technology of optical structure and coupling device, applied in electrical components, parts of color TV, parts of TV system, etc., can solve problems such as high cost, difficult to popularize, and limited lighting conditions

Inactive Publication Date: 2010-10-20
NANJING INST OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to aim at the shortcomings of traditional low-illuminance imagers such as limitation of lighting conditions, high cost and difficult to popularize, etc., to imitate the process of adjusting the nerve fusion mode of the compound eye with the change of the brightness of the external environment, a...

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  • Multi-charge coupled device group self-adaptive imaging instrument of cambered optical structure and method thereof
  • Multi-charge coupled device group self-adaptive imaging instrument of cambered optical structure and method thereof
  • Multi-charge coupled device group self-adaptive imaging instrument of cambered optical structure and method thereof

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Embodiment Construction

[0054] The invention designs an adaptive imager with multiple charge-coupled device groups with a curved surface optical structure. The main hardware devices include three common color CCD cameras, two DSP digital signal processing chips TMS320DM642 and TMS320VC5510 with powerful and fast computing capabilities, programmable video signal processor SAA7111A and electric erasable memory chip E2PROM.

[0055] The model of the CCD is 3209A. This camera has two systems: PAL system and NTSC, and the resolutions are 500×582 and 510×429 respectively. The PAL system is adopted in the present invention, and the size of the lens is 38mm×38mm. The obtained ommatidium images had a resolution of 500 × 582. as attached figure 1 As shown, the three CCDs are tightly bound together and attached to a curved surface with a radius r to simulate the three ommatidia in the compound eyes of insects. The angle between the optical axes of each two adjacent ommatidia is θ≈art sin( D / r). Constitute t...

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Abstract

The invention relates to a multi-charge coupled device group self-adaptive imaging instrument of a cambered optical structure and a method thereof, belonging to a field of the image information acquisition and processing. By imitating an ommateum to adjust the nerve conduction mode with the change of the illumination under the condition of day alternates with night to obtain a self-adaptive imaging effect principle, the instrument uses a plurality of common charge coupled devices (CCD), corresponding auxiliary circuits and a neural processing algorithm to construct a biomimic self-adaptive adjustment imaging instrument. The imaging instrument has an imaging function of self adjusting fusion modes with the change of illumination conditions, can acquire a high-contrast image under a normal illumination condition, and also can acquire a high-brightness sensitive image under a weak illumination condition. The invention realizes high-definition surveillance and monitoring under the condition of day alternates with night, belonging to the image information acquisition and processing field.

Description

1. Technical field [0001] The multi-charge coupled device group self-adaptive imager and method of the curved surface optical structure of the present invention belong to the field of image information acquisition and processing. 2. Background technology [0002] In applications such as video scene monitoring and industrial production monitoring, image sensors are usually required not only to have high spatial resolution, but also to be able to obtain high-quality image information at night or in low light conditions. Ordinary image sensors are dependent on external lighting conditions, and the reduction of the brightness of natural light sources at night or in other special weather conditions will inevitably affect the imaging effect. Although an external artificial light source is usually used as an auxiliary light source for the image sensor at night, the brightness range of this light source is limited, and the placement of the light source will directly affect the imagi...

Claims

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Application Information

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IPC IPC(8): H04N9/09H04N5/335H04N7/18
Inventor 黄陈蓉徐梦溪
Owner NANJING INST OF TECH
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