Image classification method based on self-modulated dictionary learning
A technology of dictionary learning and classification methods, applied in character and pattern recognition, instruments, computer parts, etc.
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[0067] Examples:
[0068] This embodiment is divided into a training phase and a classification phase. The main processes of each embodiment are described below:
[0069] Training process:
[0070] 1. Local feature extraction: local feature extraction is performed on a set of training images I. The local feature descriptor can effectively represent the local information of the image, which provides a basis for the formation of the subsequent overall image description. For tasks such as target recognition, the SIFT feature has a good effect, so this embodiment uses the SIFT feature as the local feature of the image. In addition, when extracting local features of an image, you also need to determine the sampling strategy, that is, dense sampling or sparse sampling (point of interest sampling). The two sampling methods are divided by the number of sampling points in an image. If only some interesting points of an image are sampled, and the number of sampling points is relatively small...
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