Method and apparatus for extracting image feature
First Claim
Patent Images
1. A method for extracting features from an image for use in a computing device, the method comprising:
- producing Gaussian Scale Space (GSS) images in the type of a pyramid from the image inputted to the computing device;
performing a Scale Normalized Laplacian Filtering on the GSS images;
detecting interest points from the images that are subject to the Scale Normalized Laplacian Filtering; and
extracting features of the image using the detected interest points,wherein the detecting interest points comprises processing three adjacent GSS images using one storage area for GSS images, one storage area for SCLoG (Scale Normalized Laplacian of Gaussian) images, one storage area for gradients, and a plurality of temporary storage areas, andwherein the processing three adjacent GSS images includes copying and calculating the GSS images and the SCLoG images into the temporary storage areas.
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Abstract
A method for extracting features from an image for use in a computing device, the method comprising: producing Gaussian Scale Space (GSS) images in the type of a pyramid from the image inputted to the computing device; performing a Scale Normalized Laplacian Filtering on the GSS images; detecting interest points from the images that are subject to the Scale Normalized Laplacian Filtering; and extracting features of the image using the detected interest points.
10 Citations
13 Claims
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1. A method for extracting features from an image for use in a computing device, the method comprising:
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producing Gaussian Scale Space (GSS) images in the type of a pyramid from the image inputted to the computing device; performing a Scale Normalized Laplacian Filtering on the GSS images; detecting interest points from the images that are subject to the Scale Normalized Laplacian Filtering; and extracting features of the image using the detected interest points, wherein the detecting interest points comprises processing three adjacent GSS images using one storage area for GSS images, one storage area for SCLoG (Scale Normalized Laplacian of Gaussian) images, one storage area for gradients, and a plurality of temporary storage areas, and wherein the processing three adjacent GSS images includes copying and calculating the GSS images and the SCLoG images into the temporary storage areas. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for extracting features from an image for use in a computing device, the apparatus comprising:
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means for producing Gaussian Scale Space (GSS) images in the type of a pyramid from the image inputted to the computing device; means for performing a Scale Normalized Laplacian Filtering on the GSS images; means for detecting interest points from the images that are subjected to the Scale Normalized Laplacian Filtering; and means for extracting features of the image using the detected interest points, wherein the means for detecting interest points is configured to process three adjacent GSS images using one storage area for GSS images, one storage area for SCLoG (Scale Normalized Laplacian of Gaussian) images, one storage area for gradients, and a plurality of temporary storage areas, by copying and calculating the GSS images and the SCLoG images into the temporary storage areas. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for extracting features from an image for use in a computing device, the method comprising:
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producing Gaussian Scale Space (GSS) images in the type of a pyramid from the image inputted to the computing device; performing a Scale Normalized Laplacian Filtering on the GSS images; detecting interest points from the images that are subject to the Scale Normalized Laplacian Filtering; and extracting features of the image using the detected interest points, wherein said detecting interest points comprises; storing adjacent first, second and third GSS images among the GSS images in a first storage space; copying the second GSS image and the third GSS image into a second storage space; producing first, second and third SCLOG (Scale Normalized Laplacian of Gaussian) images corresponding to the first, second and third GSS images; storing the second SCLoG image among the SCLoG images in the second storage space; and calculating a first gradient from the second GSS image in the second storage space to store in the first storage space.
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Specification