Method and device for processing multi-picture video image

A method for processing a multi-picture video image, comprising:

• receiving a data code stream of sub-picture video images from several channels;
• equalizing displaying effect of the sub-picture video images from several channels with control parameters respectively according to image characteristics of the sub-picture video images;
• and
• synthesizing the equalized sub-picture video images from several channels to a multi-picture video image,
• wherein equalizing displaying effect of the sub-picture video images from several channels with control parameters respectively according to image characteristics of the sub-picture video images comprises:
• receiving a current sub-picture video image Fn;
• equalizing displaying effect of the received current sub-picture video image Fn and obtaining image characteristics of the current sub-picture video image Fn by using a control parameter and a weighted adjustment coefficient of m frame of sub-picture video images that are before the current sub-picture video image Fn;
• and
• calculating an adjustment coefficient of the current sub-picture video image Fn before equalization according to the image characteristics of the current sub-picture video image Fn before equalization, where m is a natural number greater than or equal to 1.

A device for processing a multi-picture video image, comprising:

• an equalizing module, for receiving a data code stream of sub-picture video images from several channels, and equalizing displaying effect of the sub-picture video images from the several channels with control parameters respectively according to image characteristics of the sub-picture video images;
• and
• a synthesizing module, for synthesizing the sub-picture video images equalized by the equalizing module to a multi-picture video image,
• wherein the equalizing module comprises:
• a first image characteristics obtaining sub-module, for obtaining image characteristics of a current sub-picture video image;
• a first calculating sub-module, for calculating an adjustment coefficient according to a control parameter and the image characteristics of the current sub-picture video image obtained by the first image characteristics obtaining sub-module;
• and
• a first equalizing sub-module, for equalizing displaying effect of the current sub-picture video image by using the control parameter and the adjustment coefficient calculated by the first calculating sub-module.

A device for processing a multi-picture video image, comprising:

• an equalizing module, for receiving a data code stream of sub-picture video images from several channels, and equalizing displaying effect of the sub-picture video images from the several channels with control parameters respectively according to image characteristics of the sub-picture video images;
• and
• a synthesizing module, for synthesizing the sub-picture video images equalized by the equalizing module to a multi-picture video image,
• wherein the equalizing module comprises:
• a second image characteristics obtaining sub-module, for equalizing displaying effect of a received current sub-picture video image Fn and obtaining image characteristics of the current sub-picture video image Fn by using a control parameter and a weighted adjustment coefficient of m frame(s) of sub-picture video images that are before the current sub-picture video image Fn while receiving the current sub-picture video image Fn;
• and
• a second calculating sub-module, for calculating an adjustment coefficient of the current sub-picture video image Fn before equalization according to the image characteristics of the current sub-picture video image before equalization Fn obtained by the second image characteristics obtaining sub-module, where m is a natural number greater than or equal to 1.