Controlling a video content system by adjusting the compression parameters

A computerized system of controlling a video content system based on an input video sequence, the input video sequence including a current input frame, a preceding input frame and one or more subsequent input frames, the system comprising a processor operatively connected to a memory and an I/O interface, wherein:

• the I/O interface is configured to obtain the current input frame, the preceding input frame, a candidate compressed frame corresponding to the current input frame, and a preceding compressed frame corresponding to the preceding input frame;
• and
• the processor is configured to:
• compute a first difference value from the current input frame and the preceding input frame and a second difference value from the candidate compressed frame and the preceding compressed frame;
• compare the first difference value and the second difference value giving rise to an inter-frame quality score;
• compute an intra-frame quality score using an intra-frame quality measure that is applied in the pixel-domain of the candidate compressed frame and the current input frame;
• evaluate quality of the candidate compressed frame using a quality criterion related to the inter-frame quality score and the intra-frame quality score;
• determine a compression configuration for compressing at least one of the subsequent input frames based on result of the evaluation;
• and
• wherein the I/O interface is further configured to provide the compression configuration to the video content system for performing compression of the at least one of the subsequent input frames,
• wherein the compression configuration comprises one or more compression parameters selected from a group comprising quantization parameter, bit allocation, frame type, prediction mode, and setting of an in-loop deblocking filter, and
• wherein the processor is configured to determine a compression configuration by adjusting one or more of the compression parameters in case the quality criterion is not satisfied.

A non-transitory computer readable medium, tangibly embodying a program of instructions that, when executed by a computer, cause the computer to perform a method of controlling a video content system based on an input video sequence, the input video sequence including a current input frame, a preceding input frame and one or more subsequent input frames, the method comprising:

• obtaining the current input frame, the preceding input frame, a candidate compressed frame corresponding to the current input frame, and a preceding compressed frame corresponding to the preceding input frame;
• computing a first difference value from the current input frame and the preceding input frame and a second difference value from the candidate compressed frame and the preceding compressed frame;
• comparing the first difference value and the second difference value giving rise to an inter-frame quality score;
• computing an intra-frame quality score using an intra-frame quality measure that is applied in the pixel-domain of the candidate compressed frame and the current input frame;
• evaluating quality of the candidate compressed frame using a quality criterion related to the inter-frame quality score and the intra-frame quality score;
• determining a compression configuration for compressing at least one of the subsequent input frames based on result of the evaluation;
• and
• providing the compression configuration to the video content system for performing compression of the at least one of the subsequent input frames,
• wherein the compression configuration comprises one or more compression parameters selected from a group comprising quantization parameter, bit allocation, frame type, prediction mode, and setting of an in-loop deblocking filter, and
• wherein the processor is configured to determine a compression configuration by adjusting one or more of the compression parameters in case the quality criterion is not satisfied.