image recognition is a field of pattern recognition and image processing. In the image recognition attempt is made to divide objects in an image. These objects are assigned to symbolic descriptions. About the connection between the objects is not sought, as is common in pattern analysis.
- speech recognition
- Bild-/Objekterkennung
- robotics (including in industry)
- biometrics (eg fingerprint, voice or iris recognition)
- character recognition
- Etc.
used.
There are 2 phases, the work phase and the learning phase.
The phase of work is concerned with the actual Pattern recognition process and is divided into 5 phases.- recording
- of signals, for example, by camera or microphone
- discretization
- quantization
- pre
- Troubleshooting
- scaling / normalization
- sensible division of the input data, such as segmentation
- feature extraction
- filtering of data / features
- transformation into a compact form
- result is a feature vector in a feature space
- feature reduction
- omitting unimportant features
- investigation of the separability of features
- result is a feature vector with low dimension
- classification
- object is a class assigned
- decision by comparing the characteristics
- which class the object belongs most likely to
- realization often by neural networks
problems are to be made on changes to the object, prior knowledge is lacking or if the conditions are constantly changing.
deals with the manipulation of images for subsequent display. The image processing is used as an intermediate step to a further machine processing (image segmentation, image recognition, image understanding and pattern recognition). Image processing is often used in engineering and medical technology. With image processing methods are measured in machine objects, controlled objects or read coded information. X-ray and ultrasound machines provide the image processing images, which can provide the doctor easier. X-ray machines in secure areas to examine luggage and clothing automatically dangerous items such as weapons.
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