Image preprocessing

Full Title

Arrangements for image or video recognition or understanding (character recognition in images or video G06V30/10) > Image preprocessing

Child Classifications

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• G06V 10/22 by selection of a specific region containing or referencing a pattern; Locating or processing of specific regions to guide the detection or recognition
• G06V 10/24 Aligning, centring, orientation detection or correction of the image
• G06V 10/25 Determination of region of interest [ROI] or a volume of interest [VOI]
• G06V 10/255
• G06V 10/26 Segmentation of patterns in the image field; Cutting or merging of image elements to establish the pattern region, e.g. clustering-based techniques; Detection of occlusion
• G06V 10/28 Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns
• G06V 10/30 Noise filtering
• G06V 10/32 Normalisation of the pattern dimensions
• G06V 10/34 Smoothing or thinning of the pattern; Morphological operations; Skeletonisation
• G06V 10/36 Applying a local operator, i.e. means to operate on image points situated in the vicinity of a given point; Non-linear local filtering operations, e.g. median filtering