1. An image processing system comprising at least one hardware processor to implement: an image analysis engine configured to analyze an input image and generate metadata about the input image; an indexing engine configured to structuralize and organize the metadata and generate index data based on the metadata; a search engine configured to extract index data matching a search condition and image data corresponding to the index data matching the search condition, from the input image; and a browsing engine configured to generate a heatmap based on the extracted index data and image data and display the heatmap and an image matching the search condition on a screen, wherein the image analysis engine is configured to classify objects included in the input image, analyze motions or lines of movement of the objects, and perform cumulative hashing on a result of analyzing the motions of the objects per unit time.