Image detection device, image detection method and storage medium storing program
AssigneeNEC Corporation
InventorTakuya Ogawa
Life of this patent
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Abstract
Provided are an image detection device, an image detection method and a program, which are capable of improving correspondence to a target deformation by optimizing a template shape, when performing target detection using template matching. An image detection device 100 for detecting a target from an input image comprises: a template generation unit 10 that generates a template for detecting a target; a mask generation unit 20 that generates a mask which shields a portion of the template, on the basis of temporal variations of a feature point extracted from an area including the image target; and a detection unit 30 that detects the target from the image using the template a portion of which is shielded by the mask.
Claims12
An image detection device comprising:
- a memory that stores a set of instructions;
- and
- at least one processor configured to execute the set of instructions to:
- generate a template for detecting a target;
- generate a mask partly shielding the template based on temporal variation of feature points extracted from an area including the target in an input image;
- detect the target from the image by using the template partly shielded by the mask;
- identify moving directions of feature points as the temporal variation, and generate the mask based on the identified moving directions;
- and
- identify a dominant direction in the identified moving directions of the feature points, and generate the mask by shielding a region including a feature point whose moving direction is different from the dominant direction.
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;
- detecting the target from the image using the template partly shielded by the mask;
- identifying moving directions of the feature points as the temporal variation, and generating the mask based on the identified moving directions;
- and
- identifying a dominant direction in the identified moving directions of the feature points, and generating the mask by shielding a region including a feature point whose moving direction is different from the dominant direction.
A non-transitory computer readable storage medium storing a program causing a computer to execute:
- a template generation process of generating a template for detecting a target;
- a mask generation process 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
- a detection process of detecting the target from the image by using the template partly shielded by the mask;
- wherein the mask generation process identifies moving directions of the feature points as the temporal variation, and generates the mask based on the identified moving directions, and
- wherein the mask generation process identifies a dominant direction in the identified moving directions of the feature points, and generates the mask by shielding a region including a feature point whose moving direction is different from the dominant direction.
Dependencies are inferred from the claim text.