System and method for detecting scrolling text in mixed mode film and video

A method of detecting scrolling text in a mixed-mode video sequence, the method comprising:

• generating a plurality of motion vectors between blocks of two or more extracted frames of a mixed-mode video sequence;
• analyzing the motion vectors to detect a rate of movement of at least some of the blocks between the two or more extracted frames with a temporal distance between the extracted frames, indicative of the presence of scrolling text in the mixed-mode video sequence;
• and
• calculating differences in pixel values between blocks of two or more consecutive frames in the mixed-mode video sequence, indicative of the presence of scrolling text in the mixed-mode video sequence for displaying the scrolling text and the mixed-mode video sequence on a display.

A system for detecting scrolling text in a mixed-mode video sequence, the system comprising:

• a motion estimator configured to generate a plurality of motion vectors between blocks of two or more extracted frames of a mixed-mode video sequence;
• an extracted frame motion analyzer configured to analyze the motion vectors to detect a rate of movement of at least some of the blocks between the two or more extracted frames with a temporal distance between the extracted frames, indicative of the presence of scrolling text in the mixed-mode video sequence;
• and
• a consecutive frame motion analyzer configured to calculate differences in pixel values between blocks of two or more consecutive frames in the mixed-mode video sequence, indicative of the presence of scrolling text in the mixed-mode video sequence for displaying the scrolling text and the mixed-mode video sequence on a display.

A system for detecting scrolling text in a mixed-mode video sequence, the system comprising:

• means for generating a plurality of motion vectors between blocks of two or more extracted frames of a mixed-mode video sequence;
• means for analyzing the motion vectors to detect a rate of movement of at least some of the blocks between the two or more extracted frames with a temporal distance between the extracted frames, indicative of the presence of scrolling text in the mixed-mode video sequence;
• and
• means for calculating differences in pixel values between blocks of two or more consecutive frames in the mixed-mode video sequence, indicative of the presence of scrolling text in the mixed-mode video sequence for displaying the scrolling text and the mixed-mode video sequence on a display.