A Free Experimental System for Image Processing. ImLab is a free open source graphical application for Scientific Image Processing that runs in Windows, Linux and many other UNIX systems. It supports multiple windows, data types including 32 bit integers, 32 bit real numbers and complex numbers. It is implemented in C++ and also in C to provide a very simple way to add new functions. It has many image operations and supports several file formats.

ImLab Great Features:
General
1. Load and Save IM library image formats:
2. PNM, ICO, PNG, JP2, BMP, PCX, TIFF, JPEG, GIF, RAS, TGA and SGI.
3. Load and Save multipage formats as TIFF and GIF, or frames as AVI and WMV in Windows.
4. Import and Export RAW data
5. Import and Exports CGM, WMF, EMF
6. Export image as a PostScript file
7. Print support in Windows
8. Processing Log (a simple History)
9. Windows Clipboard Copy and Paste
10. Capture using Direct X in Windows

View
1. Zoom
2. Additional Bitmap views
3. Histogram
4. Image Matrix
5. Full Screen
6. Real 2 Integer conversions
7. Complex 2 Real conversions
8. Hues palette for viewing angles
9. Mouse coordinates information on the Status Bar
10. Results Matrix

Image
1. Byte, Unsigned Short, Integer, Real and Complex data types
2. XYZ, Lab, YCbCr, CMYK, RGB, Gray Scale, Binary and RGB Palette Indexed color modes
3. Generic Attributes (metadata)
4. Gray images pseudo coloring
5. Undo when operation over the same image window
6. Counter to follow/interrupt long time processing

Processing / Quantize
1. Reduce Grays Uniform and Median Cut
2. RGB to 216 Colors w/wo Dithering
3. RGB to <256 Colors using Median Cut

Processing / Color Components
1. RGB to Gray Scale using Luma and Linear weights
2. Split/Merge RGB
3. Split/Merge HSI
4. Split Chroma/Intensity
5. Plot Yrb Ghroma Gamut
6. Plot HS Gamut

Processing / Statistics
1. Count Colors
2. Image Statistics
3. Histogram Statistics
4. RMS Error, SNR

Processing / Threshold
1. Manual, by Percentage
2. Difusion and Uniform Error
3. by Local Contrast, by Local Max
4. by Difference
5. Otsu, Hysteresis

Processing / Histogram
* Equalization and Expansion

Processing / Render:
1. Constant, Color, Box, Tent, Cone, Wheel, Gaussian, Cosine, Sinc, Ramp
2. Add Uniform/Speckle/Gaussian Noise

Processing / Unary Arithmetic
1. Inverse, Less, Square, Square Root, Exponencial, Logarithm, Sine, Cosine, Abssolute
2. Split/Merge Complex, Conjugate
3. Normalize Complex by Magnitude

Processing / Tone Gamut
1. Normalize, UnNormalize: Convertions (0-1) <-> (0-255)
2. Normalized Power (Gamma), Log and Exp
3. Slice, Expand, Zero Start
4. Tone Crop
5. Brightness and Contrast

Processing / Arithmetic
1. Add, Subtract, Multiply, Divide, Power, Maximum, Minimum, Difference
2. Blend
3. Background Subtraction
4. Mean and StdDev of multiple images

Processing / Logical Arithmetic
1. And, Or, Xor, Not
2. Bit Plane Extract and Reset

Processing / Filter
1. Kernel Convolution
2. Image Convolution
3. Compass
4. Gaussian, Circular Mean
5. Difference of Gaussians
6. Laplacian of Gaussian
7. Sobel, Zero Crossing
8. Canny

Processing / Filter (Rank)
1. Median
2. Closest MinMax, Local Max, Local Min, Range (Max-Min)

Processing / Morphology (Binary)
1. Kernel Convolution
2. Erode, Dilate, Open, Close
3. Outlining, Thining

Processing / Morphology (Gray Scale)
1. Kernel Convolution
2. Erode, Dilate, Open, Close
3. Top Hat, Well, Gradient

Processing / Transform
1. FFT, IFFT,Swap Quadrants
2. Lifted Wavelet
3. Hough Lines and Circles
4. Cross Correlation
5. Auto Correlation
6. Distance Transform, Regional Maximum

Processing / Effects
1. Negative, Solarize
2. Pixelate, Posterize
3. Impressionist Filter
4. Replace RGB, Replace Constant

Processing / Analyze
1. Find Regions
2. Measure Regions: Area, Perimeter, Holes, Centroid, Principal Axis
3. Prune, Fill Holes
4. Plot Chain Code

The license of this software is Free, you can free download and free use this image editing software.