Method for extracting features from images and electronic device employing method

An electronic device, comprising:

• a storage device;
• and
• at least one processor, wherein the storage device stores one or more programs, when executed by the at least one processor, the one or more programs cause the at least one processor to:
• obtain an image, convert the image into an image matrix, divide the image matrix to obtain an image vector, and divide the image vector to obtain a first number of image sub blocks;
• obtain a weight matrix, divide the weight matrix to obtain a second number of weight vectors, divide each of the weight vectors to obtain a first number of weight sub blocks;
• obtain an offset matrix, divide the offset matrix to obtain a second number of offset quantum blocks;
• and
• perform vector multiplication on the first number of image sub blocks and the first number of weight sub blocks of each of the weight vectors, to obtain a second number of feature sub blocks, add the second number of feature sub blocks and the second number of offset quantum blocks to obtain image feature sub blocks, and form an image feature from the image feature sub blocks.

A non-transitory storage medium having stored thereon instructions that, when executed by a processor of a computer device installed in an electronic device, cause the processor to perform an extracting method, wherein the method comprises:

• obtaining an image, converting the image into an image matrix, dividing the image matrix to obtain an image vector, and dividing the image vector to obtain a first number of image sub blocks;
• obtaining a weight matrix, dividing the weight matrix to obtain a second number of weight vectors, dividing each of the weight vector to obtain a first number of weight sub blocks;
• obtaining an offset matrix, dividing the offset matrix to obtain a second number of offset quantum blocks;
• and
• performing vector multiplication on the first number of image sub blocks and the first number of weight sub blocks of each of the weight vectors, to obtain a second number of feature sub blocks, adding the second number of feature sub blocks and the second number of offset quantum blocks to obtain image feature sub blocks, and forming the image feature from the image feature sub blocks.