Object estimation device, method and program
AssigneeFUJIFILM Corporation
InventorMakoto YONAHA
Life of this patent
Estimating the term…
Abstract
Efficient and accurate estimation of the position and size of an object is achieved. Convolution of an image with a smoothing filter is repeated to generate a plurality of smoothed images L(x, y, σi) of different scales. Then, a differential image G(x, y, σi) between each pair of the smoothed images L(x, y, σi) of scales σi and σi×2 is generated. Then, a combined image AP is generated by combining the differential images G(x, y, σi), and a position estimating unit estimates the position of the object based on the combined image AP.
Claims13
An object estimation device comprising:
- smoothing means for generating a plurality of smoothed images of different scales by repeating convolution of an image with a smoothing filter having filtering characteristics corresponding to a contour of an object;
- differential image generating means for generating a plurality of differential images by calculating a difference between each pair of the smoothed images apart from each other by a predetermined scale interval in the smoothed images generated by the smoothing means;
- combining means for generating a combined image by combining the differential images generated by the differential image generating means;
- and
- position estimating means for estimating a position of the object from a position where a maximum or minimum signal value is found in the combined image generated by the combining means.
An object estimation method comprising the steps of:
- generating a plurality of smoothed images of different scales by repeating convolution of an image with a smoothing filter having filtering characteristics corresponding to a contour of an object;
- generating a plurality of differential images by calculating a difference between each pair of the smoothed images apart from each other by a predetermined scale interval in the generated smoothed images;
- generating a combined image by combining the generated differential images;
- and
- estimating a position of the object from a position where a maximum or minimum signal value is found in the generated combined image.
A non-transitory computer readable medium containing an object estimation program for causing a computer to execute a procedure comprising:
- generating a plurality of smoothed images of different scales by repeating convolution of an image with a smoothing filter having filtering characteristics corresponding to a contour of an object;
- generating a plurality of differential images by calculating a difference between each pair of the smoothed images apart from each other by a predetermined scale interval in the generated smoothed images;
- generating a combined image by combining the generated differential images;
- and
- estimating a position of the object from a position where a maximum or minimum signal value is found in the generated combined image.
Dependencies are inferred from the claim text.