Texture recognition device and operation method of texture recognition device

A texture recognition device, comprising:

• a light source array comprising a plurality of light sources;
• and
• an image sensor array at a side of the light source array and comprising a plurality of image sensors, wherein the plurality of image sensors are configured to receive light emitted from the plurality of light sources and reflected to the image sensors by a texture for a texture image collection,
• wherein each of the image sensors comprises a plurality of signal switches, and a signal of each of the image sensors is read through the plurality of signal switches for forming one image pixel of the texture image,
• wherein each of the image sensors comprises a plurality of sub-image sensors, each of the sub-image sensors comprises a photosensor and a signal switch electrically connected to the photosensor,
• wherein a plurality of sub-signals of the plurality of sub-image sensors comprised in each of the image sensors are respectively output to a data output circuit through signal switches of the plurality of sub-image sensors, and then the data output circuit superimposes the plurality of sub-signals to obtain a signal of each of the image sensors for forming one image pixel of the texture image, or
• a plurality of sub-signals of the plurality of sub-image sensors comprised in each of the image sensors are respectively output through the signal switches of the plurality of sub-image sensors and then are superimposed to obtain a signal of each of the image sensors, and then the signal of each of the image sensors obtained by superposition is output to a data output circuit for forming one image pixel of the texture image.

An operation method of a texture recognition device, wherein the texture recognition device comprises:

• a light source array comprising a plurality of light sources;
• and
• an image sensor array at a side of the light source array and comprising a plurality of image sensors, wherein the plurality of image sensors are configured to receive light emitted from the plurality of light sources and reflected to the image sensors by a texture for a texture image collection, and each of the image sensors comprises a plurality of signal switches;
• and
• the operation method comprises:
• reading a signal of each of the image sensors through the plurality of signal switches for forming one image pixel of the texture image;
• the plurality of light sources comprise at least one first light source and at least one second light source, and the second light source is offset from the first light source by a first distance along a first direction;
• and
• the operation method further comprises:
• lighting the first light source at a first moment and lighting the second light source at a second moment different from the first moment during the texture image collection performed by the image sensor array,
• wherein an imaging range of the first light source on the image sensor array is in a first annular shape, and an imaging range of the second light source on the image sensor array is in a second annular shape;
• the first annular shape does not overlap with the second annular shape or an area of an overlapping region of the first annular shape and the second annular shape is smaller than an interference threshold.