Motion-based human video detection

A computer-implemented method comprising:

• determining, for two or more images captured by a camera, a first false positive detection of a first object and a corresponding first amount of motion energy for an area in the two or more images in which the first object was detected;
• and
• assigning, for training an object detector, a penalty to the first false positive detection that is higher than a second penalty assigned to a second false positive detection with a higher motion energy than the first amount of motion energy.

A system comprising one or more computers and one or more storage devices on which are stored instructions that are operable, when executed by the one or more computers, to cause the one or more computers to perform operations comprising:

• determining, for two or more images captured by a camera, a first false positive detection of a first object and a corresponding first amount of motion energy for an area in the two or more images in which the first object was detected;
• and
• assigning, for training an object detector, a penalty to the first false positive detection that is higher than a second penalty assigned to a second false positive detection with a higher motion energy than the first amount of motion energy.

One or more non-transitory computer storage media encoded with instructions that, when executed by one or more computers, cause the one or more computers to perform operations comprising:

• determining, for two or more images captured by a camera, a first false positive detection of a first object and a corresponding first amount of motion energy for an area in the two or more images in which the first object was detected;
• and
• assigning, for training an object detector, a penalty to the first false positive detection that is higher than a second penalty assigned to a second false positive detection with a higher motion energy than the first amount of motion energy.