Information processing device, image transmission method, and recording medium

An image transmission method comprising:

• drawing, using a processor, a processing result from software into an image memory that stores therein an image to be displayed on a terminal device that is connected via a network;
• detecting, using the processor, an update area containing an update between frames in the image;
• first performing still image compression on the image in the update area;
• first calculating, using the processor, a compression ratio of still image compressed data in the update area;
• identifying, using the processor, a high-frequency change area in which a frequency of changes between the frames in the image exceeds a predetermined frequency;
• second performing moving image compression on the image in the high-frequency change area;
• second calculating, using the processor, a compression ratio of moving image compressed data in the high-frequency change area;
• transmitting, to the terminal device, the still image compressed data in the update area and the moving image compressed data in the high-frequency change area;
• and
• stopping, using the processor, the moving image compression based on the result of comparing the compression ratio of the moving image compressed data in the high-frequency change area and a compression ratio of still image compressed data in a previous update area that is the update area in a previous frame detected before the start of the moving image compression and has been detected at a position associated with the high-frequency change area.

A computer readable recording medium having stored therein an image transmission program causing a computer to execute a process comprising:

• drawing a processing result from software into an image memory that stores therein an image to be displayed on a terminal device that is connected via a network;
• detecting an update area containing an update between frames in the image;
• first performing still image compression on the image in the update area;
• first calculating a compression ratio of still image compressed data in the update area;
• identifying a high-frequency change area in which a frequency of changes between the frames in the image exceeds a predetermined frequency;
• second performing moving image compression on the image in the high-frequency change area;
• second calculating a compression ratio of moving image compressed data in the high-frequency change area;
• transmitting, to the terminal device, the still image compressed data in the update area and the moving image compressed data in the high-frequency change area;
• and
• stopping the moving image compression based on the result of comparing the compression ratio of the moving image compressed data in the high-frequency change area and a compression ratio of still image compressed data in a previous update area that is the update area in a previous frame detected before the start of the moving image compression and has been detected at a position associated with the high-frequency change area.