METHOD FOR IMAGE PROCESSING AND AN APPARATUS
First Claim
Patent Images
1. A method comprising:
- receiving an image;
filtering the image by a first filter to obtain a set of first filtered values and by a second filter to obtain a set of second filtered values;
storing the first filtered values;
applying an algorithm to the set of first filtered values and the set of second filtered values to obtain a set of results;
searching at least one local maximum, local minimum or both of the results to determine a location of an interest point; and
determining a descriptor for a detected interest point on the basis of the stored one or more first filtered values.
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Abstract
The disclosure relates to a method comprising receiving an image;
filtering the image by a first filter to obtain a set of first filtered values and by a second filter to obtain a set of second filtered values. The first filtered values are stored. An algorithm is applied to the set of first filtered values and the set of second filtered values to obtain a set of results. At least one local maximum, local minimum or both of the results are searched to determine a location of an interest point. A descriptor is determined for a detected interest point on the basis of the stored one or more first filtered values. The disclosure also relates to an apparatus and a storage medium.
11 Citations
20 Claims
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1. A method comprising:
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receiving an image; filtering the image by a first filter to obtain a set of first filtered values and by a second filter to obtain a set of second filtered values; storing the first filtered values; applying an algorithm to the set of first filtered values and the set of second filtered values to obtain a set of results; searching at least one local maximum, local minimum or both of the results to determine a location of an interest point; and determining a descriptor for a detected interest point on the basis of the stored one or more first filtered values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus comprising a processor and a memory including computer program code, the memory and the computer program code configured to, with the processor, cause the apparatus to:
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receive an image; filter the image by a first filter to obtain a set of first filtered values and by a second filter to obtain a set of second filtered values; store the first filtered values; apply an algorithm to the set of first filtered values and the set of second filtered values to obtain a set of results; search local maximum, local minimum or both of the results to determine a location of an interest point; and
determine a descriptor for a detected interest point on the basis of the stored one or more first filtered values. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A storage medium having stored thereon a computer executable program code for use by an apparatus, said program code comprises instructions for:
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receiving an image; filtering the image by a first filter to obtain a set of first filtered values and by a second filter to obtain a set of second filtered values; storing the first filtered values; applying an algorithm to the set of first filtered values and the set of second filtered values to obtain a set of results; searching local maximum, local minimum or both of the results to determine a location of an interest point; and determining a descriptor for a detected interest point on the basis of the stored one or more first filtered values.
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20. An apparatus comprising:
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means for receiving an image; means for filtering the image by a first filter to obtain a set of first filtered values and by a second filter to obtain a set of second filtered values; means for storing the first filtered values; means for applying an algorithm to the set of first filtered values and the set of second filtered values to obtain a set of results; means for searching local maximum, local minimum or both of the results to determine a location of an interest point; and means for determining a descriptor for a detected interest point on the basis of the stored one or more first filtered values.
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Specification