Program, information storage medium, image generation system, and image generation method for generating an image for overdriving the display device

A non-transitory computer-readable information storage medium storing a program for generating an image, the program causing a computer to function as:

• a drawing section which draws an object to generate image data;
• and
• an overdrive effect processing section which performs overdrive effect processing for the generated image data and generates image data to be output to a display section,
• wherein the overdrive effect processing section obtains differential image data in the Kth frame between image data generated in a Kth frame and image data generated in a Jth frame (K>J),
• and stores difference reduction image data obtained based on the differential image data in the Kth frame, and performs the overdrive effect processing in an Lth (L>K>J) frame based on differential image data in the Lth frame which is differential image data between image data generated in the Lth frame and image data generated in the Kth frame and the stored difference reduction image data, and
• wherein the overdrive effect processing section adds image data obtained by multiplying the differential image data in the Lth frame by the effect intensity coefficient and the difference reduction image data which is multiplied by an effect intensity coefficient smaller than that of overdrive effect processing in the Kth frame to the image data generated in the Lth frame.