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updated 1 month ago

SC - powerful image rendering by Oliver Woodford

Useful tool for rendering and outputting information rich images (colormap, render, color)

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updated 1 month ago

Shannon Edge Detector for Grayscale Images by Tyler Coye

This is an edge detector for grayscale images based on the Shannon Entropy measure for biodiversity. (shannon entropy, edge detection, grayscale)

EdgeDetector_procedure(f)

Thrshold_procedure(A)

Shannon_Algorithm.m

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updated 6 months ago

Cubehelix Colormaps: Beautiful, Distinct, Versatile! by Stephen Cobeldick

The most versatile colormap generator ever! Suitable for grayscale conversion. Maximally distinct. (colormap, color scheme, color)

cubehelix(N,start,rots,sat,gamma,yrange,domain)

cubehelix_find(map,posn,prms)

cubehelix_view(N,start,rots,sat,gamma,yrange,domain)

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updated 9 months ago

customGray by Brett Shoelson

Brett Shoelson (view profile)

Create a custom grayscale image of an RGB--specify weightings or select from predefined versions. (rgb2gray, grayscale, colorspace)

Custom Gray

customGray(imgin,calledFrom)

distributeObjects(nobjects,startpos,endpos,gap,warnoff)

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updated 1 year ago

Color multi-frame view (RGB figure shadows) by Luke Xie

Luke Xie (view profile)

Creates color figure shadows - multiple shadows and multiple frames (2d, 3d, color)

multi_frame_viewRGB(files,we,be,ne,ie,gr)

example_script.m

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updated 1 year ago

Multiecho enhancement for 2D/3D (N-D) images by Luke Xie

Luke Xie (view profile)

Enhances images using a weighted sum or MEFIC. (2d, 3d, grayscale)

img2=multiecho_enhance(img,str,weights)

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updated 1 year ago

Hysteresis thresholding for 3D images (or 2D) by Luke Xie

Luke Xie (view profile)

Segments images based dual thresholding with 2D or 3D connectivity neighborhoods. (image processing, hysteresis, 3d)

[tri,hys]=hysteresis3d(img,t1,t2,conn)

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updated 2 years ago

Colormaps compatible with red-green color perception deficiencies by Matthias Geissbuehler

Colormaps for displaying data compatible with red-green color perception deficiencies (colormap, colormaps, linearincreasing brig...)

cmap=ametrine(n,varargin)

cmap=isolum(n,varargin)

cmap=morgenstemning(n,varargin)

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updated 3 years ago

Noncontact Speckle-Based Velocity Meter by Sagheb Kohpayeh Araghi

Finding a velocity of substance by using radon transform. (velocity, radon, image)

Johann

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updated almost 4 years ago

Region Growing (2D/3D grayscale) by Daniel

Daniel (view profile)

Recursive region growing algorithm for 2D/3D grayscale images with polygon and binary mask output (region growing, image analysis, image processing)

regionGrowing(cIM, initPos, thresVal, maxDist, tfMean, tf...

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updated 4 years ago

barcode reader by Indraneel Biswas

barcode reader which does not use thresholding (barcode, image processing, signal processing)

[X,P]=subPx(g,x,gMax,N)

[gw,xw]=movAvg(g,wt)

[pk,loc]=peakDetect(g,minHt,minDist)

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updated 4 years ago

meshCanopy by Sean de

Sean de (view profile)

Display a mesh above a grayscale image (mesh, slice, colormap)

meshCanopy(I,Mdata,Mmap,height)

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updated 5 years ago

gray2rgb by Gabriel Frangakis

Turns an m by n matrix into an m x n x 3 matrix. (image processing, gray2rgb, grayscale)

[Image]=gray2rgb(Image)

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updated 5 years ago

Add Uniform Noise by Ibraheem Al-Dhamari

Add uniform noise ranged from 0 to 255 to a graysscaled image. (add, noise, uniform)

NA=addnoise(A,sz)

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updated 5 years ago

Bipolar Colormap by Ged Ridgway

Ged Ridgway (view profile)

Symmetric/diverging/bipolar cold-neutral-hot colormap (colormap, color map, color scale)

Find a bipolar colormap, linear in grayscale, close to a ...

bipolar(m, n, interp)

colormap_optimization(cmap)

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updated 6 years ago

morphimage by Dima Pröfrock

Function to morph grayscale images. (geometric transformat..., image registration, morphing warping)

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updated 7 years ago

Hysteresis Thresholding by Massimo Fierro

Massimo Fierro (view profile)

C implementation of Hysteresis Thresholding (morphology, segmentation, hysteresis threshold)

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updated 8 years ago

Anisotropic Diffusion (Perona & Malik) by Daniel Lopes

Daniel Lopes (view profile)

A set of filters that perform 1D, 2D and 3D conventional anisotropic diffusion (gray scale data). (filtering, anisotropic, diffusion)

anisodiff1D(sig, num_iter, delta_t, kappa, option)

anisodiff2D(im, num_iter, delta_t, kappa, option)

anisodiff3D(vol, num_iter, delta_t, kappa, option, voxel_...

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updated 8 years ago

Callibrating an image by Gaurav Sehgal

This functions enables user to callibrate the image to get the relationship between pixel distance a (measurements, callibration, image)

callibration1(d)

pixvals(arg1, arg2)

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updated 8 years ago

simple RGB2grayscale converter by Steve

Steve (view profile)

For beginners who are interested in color image conversions and need to understand how the conversio (color, rgb, grayscale)

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updated 8 years ago

Grayscale to RGB Converter by Valeriy Korostyshevskiy

Convert grayscale images to RGB using a specified colormap. (color, grayscale, rgb)

grs2rgb(img, map)

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updated 8 years ago

colorGray by Alexandre Tumlinson

Creates full spectrum, blue-green-orange-salmon, colormap that maps to linear grayscale. (annotation, customization, colormap)

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updated 9 years ago

Colormix by Atakan Varol

Atakan Varol (view profile)

Quantizes a grayscale image and assigns random colors to each gray level. (fun, image processing, colormix)

colormix(I,n,disp)

demo_colormix.m

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updated 10 years ago

f_threshold by Evan Ruzanski

Demonstrates image grayscale thresholding operation in the frequency domain. (filtering, image thresholding, frequency domain)

f_threshold(file_name)

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updated 11 years ago

detect_boundary.zip by Alister Fong

Alister Fong (view profile)

Detects, sorts and classifies the boundries of multiple objects in a binary image. (image analysis, boundary, sort)

detect_boundary(input_image_small,direction)

display_boundary

larger_to_smaller_image(large_image,pixel_border)

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updated almost 12 years ago

3D Fractional Order Sunshaded Image by Gordon Cooper

Sunshaded image overlain on original data in 3D. (gallery, geophysics, sunshading)

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updated 12 years ago

Image Embedding by Ahmed Al-Ghazaly

Embedding a binary image into grayscale image. (gui, display, annotation)

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