Vision sensor chip
AssigneeTsinghua University
InventorsRong ZHAO, Yuguo CHEN, Taoyi WANG, Yihan LIN, Luping SHI
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Abstract
The present application provides a visual sensor chip. The visual sensor chip comprises a pixel array consisting of pixel units, among which each pixel unit has a corresponding time differential path and space differential path or has a corresponding intensity path, time differential path and space differential path. The present application fuses the dual-path feature of a human vision system into existing visual sensor chips, so that the capabilities of the visual sensor chips sensing spatio-temporal dynamic information can be greatly improved, allowing for high-precision, high-frame-rate, high-dynamic-range and high-efficiently robust visual representations.
Claims36
A vision sensor chip, comprising a pixel array composed of pixels;
- wherein for each pixel, the pixel is provided with a temporal difference pathway and a spatial difference pathway corresponding to each pixel;
- the temporal difference pathway is configured to output a temporal difference value of the pixel;
- the spatial difference pathway is configured to output a spatial difference value of the pixel;
- the temporal difference value is a result obtained by performing difference and quantization operations on output values of a photoreceptive subunit within the pixel at a current time and at a previous time;
- the spatial difference value is a result obtained by performing difference and quantization operations on an output value of the photoreceptive subunit at the current time and an output value of the target photoreceptive subunit at the current time;
- and
- a pixel where the target photoreceptive subunit is located is any pixel among the pixel array other than the pixel.
A vision sensor chip, comprising a pixel array composed of pixels;
- wherein for each pixel, the pixel is provided with an intensity pathway, a temporal difference pathway and a spatial difference pathway corresponding to each pixel;
- the intensity pathway is configured to output a quantized value of an output value of a photoreceptive subunit inside the pixel at a current time;
- the temporal difference pathway is configured to output a temporal difference value of the pixel;
- the spatial difference pathway is configured to output a spatial difference value of the pixel;
- the temporal difference value is a result obtained by performing difference and quantization operations on output values of a photoreceptive subunit within the pixel at a current time and at a previous time;
- the spatial difference value is a result obtained by performing difference and quantization operations on an output value of the photoreceptive subunit at the current time and an output value of the target photoreceptive subunit at the current time;
- and
- a pixel where the target photoreceptive subunit is located is any pixel among the pixel array other than the pixel.
Dependencies are inferred from the claim text.