Object detection device, object detection system, integrated circuit for object detection, and object detection method
AssigneePanasonic Corporation
InventorYuji Sugisawa
Life of this patent
Estimating the term…
Abstract
An object detection device that shares a bus with an external memory and another device includes a data acquisition unit that acquires original image data from the external memory via the bus, a reduction processing unit that generates pieces of reduced image data from the original image data at differing reduction rates after the data acquisition unit acquires the original image data once, and an object detection unit that detects a position at which an object appears in the pieces of reduced image data by performing matching processing on the pieces of reduced image data using a template for the object.
Claims15
An object detection device sharing a bus with an external memory and another device, the object detection device comprising:
- a data acquisition unit configured to acquire original image data from the external memory via the bus;
- a storage unit configured to store the original image data acquired by the data acquisition unit and a plurality of pieces of reduced image data generated from the original image data;
- a reduction processing unit configured to generate the pieces of reduced image data from the original image data at differing reduction rates;
- and
- an object detection unit configured to detect a position of a specified object by performing matching processing on the pieces of reduced image data using an object template;
- wherein the storage unit includes a first storage unit and a second storage unit,
- the object detection unit is configured to perform matching processing on each piece of reduced image data stored in the first storage unit using the object template,
- when the reduction processing unit stores, in the second storage unit, reduced image data generated by performing reduction processing at a predetermined reduction rate on a piece of reduced image data stored in the first storage unit, the piece of reduced image data stored in the first storage unit is deleted,
- the object detection unit is configured to perform matching processing on the reduced image data stored in the second storage unit using the object template, and
- when the reduction processing unit stores, in the first storage unit, reduced image data generated by performing reduction processing at the predetermined reduction rate on the reduced image data stored in the second storage unit, the reduced image data stored in the second storage unit is deleted.
An object detection method comprising:
- acquiring original image data from external memory via a bus;
- generating a plurality of pieces of reduced image data having differing reduction rates by performing reduction processing on the original image data acquired in said acquiring original image data;
- detecting a position at which an object appears in the pieces of reduced image data by performing matching processing on the pieces of reduced image data using an object template,
- performing matching processing using an object detection unit on each piece of reduced image data stored in a first storage unit using the object template;
- storing, using a reduction processing unit, in a second storage unit, reduced image data generated by performing reduction processing at a predetermined reduction rate on a piece of reduced image data stored in the first storage unit, and deleting the piece of reduced image data stored in the first storage unit;
- performing matching processing using the object detection unit on the reduced image data stored in the second storage unit using the object template;
- and
- storing, using the reduction processing unit, in the first storage unit, reduced image data generated by performing reduction processing at the predetermined reduction rate on the reduced image data stored in the second storage unit, and deleting the reduced image data stored in the second storage unit.
Dependencies are inferred from the claim text.