Scanning window in hardware for low-power object-detection in images

A method for detecting an object in a low-power vision sensor, comprising:

• capturing, via an image sensor array, an image, the image sensor array having a plurality of rows and a plurality of columns;
• transferring, via one or more line buffers, image data from one or more rows of the plurality of rows of the image sensor array;
• storing, via a hardware scanning window array, data based on a sample window of the image, the data to be used in a computer vision computation, the hardware scanning window array having a number of columns fewer than a number of columns of the one or more line buffers;
• and
• computing, via computer vision feature computation hardware, a computer vision feature based on the data stored in the hardware scanning window array.

One or more non-transitory computer-readable media storing computer-executable instructions for detecting an object in a low-power vision sensor that, when executed, cause one or more computing devices to:

• capture, via an image sensor array, an image, the image sensor array having a plurality of rows and a plurality of columns;
• transfer, via one or more line buffers, image data from one or more rows of the plurality of rows of the image sensor array;
• store, via a hardware scanning window array, data based on a sample window of the image, the data to be used in a computer vision computation, the hardware scanning window array having a number of columns fewer than a number of columns of the one or more line buffers;
• and
• compute, via computer vision feature computation hardware, a computer vision feature based on the data stored in the hardware scanning window array.

An apparatus for detecting an object in a low-power vision sensor, comprising:

• hardware means for capturing, via an image sensor array, an image, the image sensor array having a plurality of rows and a plurality of columns;
• hardware means for transferring, via one or more line buffers, image data from one or more rows of the plurality of rows of the image sensor array;
• hardware means for storing, via a hardware scanning window array, data based on a sample window of the image, the data to be used in a computer vision computation, the hardware scanning window array having a number of columns fewer than a number of columns of the one or more line buffers;
• and
• hardware means for computing, via computer vision feature computation hardware, a computer vision feature based on the data stored in the hardware scanning window array.