Cameras
First Claim
1. A camera comprising a sensor, said sensor comprising a series of pixels for receiving radiation forming an image of a scene, filter means positioned in the path of radiation incident on the sensor, said filter means being arranged to pass different spectral regions in different spatial regions, so that different spatial regions of the sensor are exposed to radiation of different spectral regions, decoding means for producing separate outputs from the sensor corresponding to the different spectral regions, memory means for storing sensor output signals and a circuit for using the outputs corresponding to the different spectral regions to remove visibility of the different spectral regions from the sensor output, to permit high resolution to be attained, in which said decoding means is further arranged to use stored signals derived from the sensor output corresponding to exposure of the sensor through the filter means by radiation of referenced spectral regions, said stored signals being representative of the position of the reference spectral regions with respect to the position of said pixels.
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Accused Products
Abstract
A camera producing colour video outputs may employ an image intensifier 5 and a monochrome CCD sensor 3. The scene is exposed through filters F3, F4 which may each contain stripes of subtractive primary colours alternating with clear regions. The video is decoded using waveforms derived from a memory which records the output of the sensor when imaged on, for example, primary colours such as red and blue, producing trains of pulses which identify the spatial regions of each line corresponding to the spatial areas of the pattern on the sensor produced by the colour filters F3, F4, in order that actual scenes can be decoded using the stored waveforms, for example using sample and hold devices. A colour interference signal is generated in matrix addition circuitry 10 to produce a luminance signal which has stripe visibility removed from it, permitting high resolution video signals to be obtained.
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Citations
14 Claims
- 1. A camera comprising a sensor, said sensor comprising a series of pixels for receiving radiation forming an image of a scene, filter means positioned in the path of radiation incident on the sensor, said filter means being arranged to pass different spectral regions in different spatial regions, so that different spatial regions of the sensor are exposed to radiation of different spectral regions, decoding means for producing separate outputs from the sensor corresponding to the different spectral regions, memory means for storing sensor output signals and a circuit for using the outputs corresponding to the different spectral regions to remove visibility of the different spectral regions from the sensor output, to permit high resolution to be attained, in which said decoding means is further arranged to use stored signals derived from the sensor output corresponding to exposure of the sensor through the filter means by radiation of referenced spectral regions, said stored signals being representative of the position of the reference spectral regions with respect to the position of said pixels.
Specification