ThresholdLocally 1.0

Date Added: March 24, 2013 | Visits: 232

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Performs LOCAL Otsu thresholding on an image; user can specify blocksize. Facilitates the threshold-segmentation of images with uneven illumination, without the need for background normalization. SYNTAX: B = thresholdLocally(A,blksz,varargin) THRESHOLDLOCALLY processes an image, calling graythresh on LOCAL blocks in an image. This facilitates easy thresholding of images with uneven background illumination, for which global thresholding is inadequate. Uses the Image Processing Toolbox function BLOCKPROC (R2009b). INPUTS:A: Any image (or path/name of an image) suitable for processing with im2bw()BLKSZ: (Optional) Block size of A, for determination of Otsu thresholding using graythresh(). In the form or [M,N]. Default is as determined by BESTBLK.OPTIONAL:1) Any P-V pair accepted by BLOCKPROC.2) FudgeFactor: a scalar value by which to multiply the local value returned by graythresh.OUTPUT:B: Output image EXAMPLE:img = imread('rice.png');thresholded = thresholdLocally(img);

Requirements: No special requirements

Platforms: Matlab

Keyword: Bestblk, Blksz, Block, Default, Determination, Determined, Inputs, Optional, Pathname

Users rating: 0/10

License: Shareware

Size: 10 KB

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