face recognition matlab codes
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my name is sapna i need matlab coding for face recognition please help
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A facial recognition system is a computer application capable of identifying or verifying a person from a digital image or a video frame from a video source. One of the ways to do this is by comparing the selected facial features of the image and a database of the face. It is often used in security systems and can be compared with other biometric data such as fingerprint or iris eye recognition systems. Recently, it has also become popular as a business identification and marketing tool.


Some face recognition algorithms identify facial features by extracting reference points or features from an image of the subject's face. For example, an algorithm can analyze the relative position, size and / or shape of the eyes, nose, cheekbones and jaw. These features are used to search for other images with matching features. Other algorithms normalize a gallery of facial images and then compress the facial data, just saving the data in the image that are useful for facial recognition. Then, a polling image is compared to the face data. One of the first successful systems is based on template adaptation techniques applied to a set of salient facial features, providing a kind of representation of the compressed face.

Recognition algorithms can be divided into two main, geometric approaches, which consider the distinctive features or photometric, which is a statistical approach that distills an image into values and compares values with templates to eliminate variations. The most popular recognition algorithms include principal component analysis using eigenfaces, linear discriminant analysis, elastic graph matching with the Fisherface algorithm, the hidden Markov model, multilinear subspace learning using the tensor representation and the motivated dynamic link coupling Neuronal.
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