The system for image analysis that analyzes an image taken by a camera improves the accuracy of detection and identification in image analysis. The system memorizes a plurality of imaging environment data sets that include setting data of a camera and data on an object; includes a detection module 211 that detects an imaging environment from the camera, a check module 212 that checks the imaging environment, and an extraction module 213 that extracts an imaging environment data set similar to the detected imaging environment; and applies the extracted imaging environment data set and analyzes an image.