SCANNING WINDOW IN HARDWARE FOR LOW-POWER OBJECT-DETECTION IN IMAGES

摘要

An apparatus includes a hardware sensor array including a plurality of pixels arranged along at least a first dimension and a second dimension of the array, each of the pixels capable of generating a sensor reading. A hardware scanning window array includes a plurality of storage elements arranged along at least a first dimension and a second dimension of the hardware scanning window array, each of the storage elements capable of storing a pixel value based on one or more sensor readings. Peripheral circuitry for systematically transfers pixel values, based on sensor readings, into the hardware scanning window array, to cause different windows of pixel values to be stored in the hardware scanning window array at different times. Control logic coupled to the hardware sensor array, the hardware scanning window array, and the peripheral circuitry, provides control signals to the peripheral circuitry to control the transfer of pixel values.

主权项

1. A low-power vision sensor, comprising:
an image sensor array capable of capturing an image, the image sensor array having a plurality of rows and a plurality of columns; one or more line buffers for transferring image data from one or more rows of the plurality of rows of the image sensor array; integration hardware capable of computing an integral image based on the image data transferred by the one or more line buffers; and computer vision feature computation hardware configured to compute a computer vision feature based on the integral image computed by the two-dimension integration hardware.