Device and method for detecting display of provided credit, and program

A sponsorship credit display detection method in a sponsorship credit display detection device for detecting, in a broadcast program, a sponsorship credit display that displays a sponsor of that broadcast program, the method comprising:

• extracting cut points, the cut points including time points where a frame in which the volume of an audio signal of the broadcast program is less than a volume threshold value and the amount of change from a previous frame is at least a pixel change threshold value is played;
• detecting a CM segment by comparing an interval between the extracted cut points with a CM defined length;
• estimating, as a sponsorship credit display segment, a predetermined time period before or after at least one continuous CM segment detected in the CM segment detection step;
• and
• providing information indicating the sponsorship credit display segment.

A computer program causing a computer to function as the sponsorship credit display detection device, the device comprising:

• a commercial message (CM) segment detector configured to:
• extract cut points, the cut points include time points where a frame in which the volume of the broadcast program is less than a volume threshold value and an amount of change from a previous frame being at least a pixel change threshold value played, and
• detect a CM segment by comparing an interval between the extracted cut points with a CM defined length;
• a first sponsorship credit display segment estimator configured to estimate, as a first sponsorship credit display segment, a predetermined time period before or after at least one continuous CM segment detected by the CM segment detector;
• and
• a provider configured to provides information indicating the first sponsorship credit display segment.