Image detection device, image detection method and storage medium storing program

An image detection method comprising:

• generating a template for detecting a target;
• generating a mask partly shielding the template based on temporal variation of feature points extracted from an area including the target in an input image;
• and
• detecting the target from the image by using the template partly shielded by the mask, wherein
• the method further comprises:
• determining, when updating the mask, whether a count of subregions not to be shielded is equal to or larger than a predetermined value, the subregions being regions into which an area including the target in an image;
• generating the mask when the count of the subregions not to be shielded by the mask is equal to or larger than the predetermined value;
• causing the mask to shield the template;
• and
• generating no mask when the count of the subregions to be shielded by the mask is larger than the predetermined value.

A non-transitory computer readable storage medium storing a program causing a computer to execute:

• template generating processing of generating a template for detecting a target;
• mask generation processing of generating a mask partly shielding the template based on temporal variation of feature points extracted from an area including the target in an input image;
• and
• detection processing of detecting the target from the image by using the template partly shielded by the mask, wherein
• the mask generation processing includes:
• processing of determining, when updating the mask whether a count of subregions not to be shielded is equal to or larger than a predetermined value, the subregions being regions into which an area including the target in an image;
• processing of generating the mask when the count of the subregions not to be shielded by the mask is equal to or larger than the predetermined value;
• and
• processing of causing the mask to shield the template, and
• the mask generation processing do not generate the mask when the count of the subregions to be shielded by the mask is larger than the predetermined value.