Detecting and Tracking Point Features with Primary Colors

A method, comprising:

• tracking one or more features in an image sequence including a plurality of frames by one or more computing devices, the tracking including detecting the one or more features in the image sequence, the detecting including, for each feature:
• computing an energy value for one or more color channels of the feature in at least one frame of the image sequence;
• and
• comparing the computed energy value for the one or more color channels to a threshold;
• and
• for at least one detected feature, tracking the respective feature according to at least one color channel for which the respective energy value is determined to be above the threshold such that at least one other color channel for which the respective energy value is determined to be below the threshold is not used in said tracking.

A system, comprising:

• one or more processors;
• and
• a memory comprising program instructions, the program instructions are executable by at least one of the one or more processors to perform operations comprising:
• tracking one or more features in an image sequence including a plurality of frames by one or more computing devices, the tracking including detecting the one or more features in the image sequence, the detecting including, for each feature:
• computing an energy value for one or more color channels of the feature in at least one frame of the image sequence;
• and
• comparing the computed energy value for the one or more color channels to a threshold;
• and
• for at least one detected feature, tracking the respective feature according to at least one color channel for which the respective energy value is determined to be above the threshold such that at least one other color channel for which the respective energy value is determined to be below the threshold is not used in said tracking.

A non-transitory computer-readable storage medium storing program instructions, the program instructions are computer-executable to perform operations comprising:

• tracking one or more features in an image sequence including a plurality of frames by one or more computing devices, the tracking including detecting the one or more features in the image sequence, the detecting including, for each feature:
• computing an energy value for one or more color channels of the feature in at least one frame of the image sequence;
• and
• comparing the computed energy value for the one or more color channels to a threshold;
• and
• for at least one detected feature, tracking the respective feature according to at least one color channel for which the respective energy value is determined to be above the threshold such that at least one other color channel for which the respective energy value is determined to be below the threshold is not used in said tracking.