Thresholding an image

Interactively threshold an image. Make a binary image.

Custom-shaped histogram

Transform an image to have any histogram you want.

Gray image thresholding using the Triangle Method

Computes a threshold the Triangle method.

MP3 a medical imaging toolbox (MRI, CT, PET...)

Medical software for Processing multi-Parametric images Pipelines

Dilation without using imdilate

code works perfectly on any binaryimage.

Measuring Solution level in bottles

The program estimates the liquid level in the beverage bottles

Nonparametric Power Spectrum Estimation With Thresholded Cepstrum

A function to nonparametrically estimate the power spectrum via thresholded cepstrum

fill2c: a pedestrian area filler

fill2c paints areas below/above a threshold with different colors

Threshold Analysis

This code depicts the relation between threshold value and false alarm for multitaper detector in cognitive radio network

Binary Image Cleaning Based on Area Size

Foreground area larger (or smaller, depending on 'mode') is preserved; otherwise it's deleted.

Color Threshold

Allows users to interactively select/deselect pixels to threshold images using RGB or HSV filters.

Hysteresis thresholding for 3D images (or 2D)

Segments images based dual thresholding with 2D or 3D connectivity neighborhoods.

Energy Detection Simulation : Finding Threhsold

Code to find threshold for energy detection in Cognitive Radio using Simulations

Classic AdaBoost Classifier

Weak threshold classifier boosted to strong Classifier with Adaboost

Conditionally colored line plot

Plots (2D line) graph split into two colors above and below a given threshold value

peakdet

Detect Peaks and Depressions in a signal

Extract Red Objects from Aerial Image

A very simple and short example on image processing.

Histogram Gaussian Smooth

This function implements the gaussian smooth of any size for an histogram ...

Edge Detection

Detects the edges in an image

Amplitude and Phase spectra of a signal (Fourier transform)

Calculating the amplitude spectrum with the desired frequency resolution and Improving Phase spectrum with thresholding

kittlerMinimimErrorThresholding

Compute an optimal image threshold. Computes the Minimum Error Threshold as described in

graythresh3

Provides three threshold estimates of a grayscale image to make it a binary image.

threshold

threshold by a value

Phase fraction calculation of microstructure

Phase fraction calculation for optical and SEM microstructure. Can do single and Batch processing too. Enjoy!

isodataAlgorithm(grayImage)

ISODATA ALGORITHM for taking the threshold - Image processing

Kittler-Illingworth Thresholding

Implements an auto-thresholding algorithm as described by Kittler and Illingworth

Otsu thresholding for any value range

Wrapper function for graythresh for any value range.

IMAGE DENOISING USING VISUSHRINK

Determine thresholds to minimize MSE,

wevleted Image

use wavelet to reduce the image size this declared by the histogram plot

GETCLIM: Suggest appropriate values for colormap limits

Determines thresholds such that 2% of data values will be mapped to the extremes of the colormap

Global Threshold computation using Otsu's Method

Global Threshold computation using Otsu's Method

Semiautomated ROI segmentation

Semiautomated ROI segmentation tool for 2D or 3D images, based on thresholding performed after drawing a custom and adjustable ROI

Homework 5 - Advanced Digital Communications. BER of BPSK. Optimum threshold.

Appropriate report, code file and figure are added together into the archive.

Color Blob Utility with Automatic Thresholding and Tolerance Calculations

This code allows the user to select a region of interest and then threshold the entire image.

crossdet

Detect crossing a threshold into a signal

ThresholdSegmentationBot

A bot to segment foreground from background using a basic blur+threshold+watershed algorithm.

LaserDiode_ThresholdGainTMM

Computes the threshold gain in various kind of cavity

climanomaly

Visualise anomalies between two lines (e.g. a time series and a climatology)

Elen's Thresholding

A histogram-based global thresholding method for image binarization

Selective filtering of a 2D matrix

This function smooths a 2D matrix only around the points where the slope exceeds a given threshold.

findintercept(Yin,varargin)

Detects intercept at certain threshold with the input signal based on the given requirements.

Threshold shade

Shades data occurring above or below a positive or negative threshold respectively.

Edge Detection Gui (variable threshold)

Open an image and get the edge detection. The threshold value is set by a slider.

Inter Class Variance & Intra Class Variance for Segmented Image

Inter Class Variance & Intra Class Variance calculation for Image Segments based on Otsu's algorithm

Spike_threshold_PS(trace,dt,win, win2, Fc,factordvdt)

Estimating spike threshold in intracellular recordings from neurons.

Percentage Exceedence of a 3D Matrix for a Threshold value

Calculates the percentage that a 3D matrix exceeds a given threshold value

Spike_threshold_PS2

Detect spike threshold in membrane potential using phase space V versus dV/dt.