HTML FILE CAUSING BROWSER ACCOMMODATING TO CANVAS ELEMENT-USABLE OBJECT IN HTML TO PERFORM PROCESS FOR DISPLAYING DESIGNATED IMAGE BY CONVERTING COLOR THEREOF BY DESIGNATED CHARACTERISTIC, METHOD FOR FILE CONVERSION, AND FILE CONVERSION PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide an HTML file causing a browser for HTML 5 (accommodating to canvas elements) to perform process at a high speed for displaying a designated image by converting color thereof by a designated characteristic.SOLUTION: As for process for displaying a designated image by converting color thereof by a designated characteristic, an algorithm includes: not instructing a data operation of a pixel unit from an HTML file to the browser; but instructing, for a plurality of times, process for uniformly overwriting color data having an appropriate luminance value and an appropriate degree of transparency on the entire area of a bit map image (original image data and data derived therefrom) developed on a canvas.