METHOD AND SYSTEM FOR SEARCHING GRAPHIC IMAGES Russian patent published in 2023 - IPC G06V30/18 G06F16/30 

FIELD: computer technology.

SUBSTANCE: invention relates to the processing of digital data to search for graphic information. The claimed invention is carried out by implementing a computer-implemented method for searching graphic images, performed using a processor and containing stages in which: the input image is processed using OpenCV and Pillow library algorithms, with the help of which the image is converted to grayscale and noise is removed, wherein when removing noise, high-contrast pixels of the input image against a background of the same colour are removed; using a machine learning model based on an artificial neural network (ANN), trained on graphic images and containing a database of their vector representations, the input image is processed, during which the image is converted into a pixel matrix, from which the key parameters of the image and their location in input image are determined, and a vector representation of the image using a maximization algorithm is formed; a search index for the input image by comparing the proximity of the vector representation of the input image with the vector representations in the ANN database is generated, and the comparison is performed using an approximate nearest neighbour search algorithm based on hierarchical graphs that allow clustering the resulting vectors in such a way that within one a cluster contains vectors that differ minimally from each other in the maximum number of elements; determining and providing at least one image from the database based on a comparison of the vector representations against said search index.

EFFECT: increasing the accuracy and speed of searching for graphic information.

11 cl, 7 dwg