Methods and apparatus to measure brand exposure in media streams

At least one article of manufacture comprising computer readable instructions that, when executed, cause at least one processor to at least:

• determine a first histogram based on at least one of luminance components or chrominance components of a first frame of video;
• determine a second histogram based on at least one of luminance components or chrominance components of a second frame of the video;
• detect a transition in the video based on the first histogram and the second histogram;
• and
• responsive to detection of the transition in the video, process a region of interest within at least one of the first frame or the second frame to detect a logo in the region of interest.

A method comprising:

• determining a first histogram based on at least one of luminance components or chrominance components of a first frame of video;
• determining a second histogram based on at least one of luminance components or chrominance components of a second frame of the video;
• detecting, by executing an instruction with at least one processor, a transition in the video based on the first histogram and the second histogram;
• and
• responsive to the detecting of the transition in the video, processing, by executing an instruction with at least one processor, a region of interest within at least one of the first frame or the second frame to detect a logo in the region of interest.