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Delphinus is a freeware 16-bit image processing software with many powerful filtering algorithms. It also allows you to control your camera exposure time through RS-232 (serial) and LPT (parallel) port. Program was made as a part of  "Pi of the Sky" project which has been realized by Institute of Nuclear Studies, Center for Theoretical Physics of the Polish Academy of Sciences, Institute of Electronic Systems and The Faculty of Physics of the Warsaw University. List of features Editor Support for FITS (8,16,48 bit), FIT, BMP, JPEG, TGA, PPM, TIFF, PNG, PCX, RAS, HIPS, ICO, CUR, MNG, JPEG 2000, WMF, EMF,GIF, EPS file formats. 16 bit processing! Oparates on RGB, YIQ, XYZ, CMY layers Making 3D images (anaglyph) Script editor (batch processing) LSF (densytogram with data filtering), histogram, scattergrams view FFT and frequency domain operations Color processing Brightness Hue Saturation Gamma LUT/Pseudo-colors Grayscale Bi-color Pseudo-color Iso-luminance Preparing test images (lines,grid,color gradient) Mixing images Simple photometry Tools Selection (circle, box) width 4 types of intensity profiles (constant, gaussian, linear, smooth edge) Color brushes Color retouch tools (reddish,blueish,sepia,gamma etc.) Smoothing tools Sharpening tools Filters and effects Remove dust Remove hot pixels Remove gradient Remove blooming Remove dark frame Divide by flat frame Remove overexposures Darkness correction (more/less) Brightness correction Contrast correction (contrast curves) Gamma correction Histogram optimization: Uniform Rayleigh Exponential CDF Binning (Mean, RMS, Max, Min, Median, RM10) Unsharp mask Bilateral smoothing filter Savitzky-Golay smoothing filters Filtering masks: Laplace sharpening (4 types) Bartlett sharpening Smart sharpening Emboss Isotropic Sobel (5 types) Prewitt (3 types) Kirsch (2 types) Robinson Mean (3x3) Mean (5x5) Median Gaussian blur Dilation Erosion Light blur Artistic blur Radial blur Vertical blur Frequency domain (Fast Fourier Transform): Low pass High pass Wiener filter Adding pink noise Adding blue noise Hough transform Color correction Balance levels (mean/max) Grayscale Reddish/Blueish colors Sepia Old photography Fog Map style Iso-luminance Remove red eyes effect Artistic blur (glow) Distortion Add noise Motion blur Decolorize Reducing colors (4,3,2 bpp) Thresholding (KSW and WSH algorithm) Convertion to grayscale (5 methods)  Camera exposure control Support for RS-232 (serial) and LPT (parallel) port. Works fine with Canon® DSLR Cameras. Mirror lock-up control. Very long exposures (above 30sec.) Making tasks lists. Making schedules - running tasks lists at described time/date  External Converter Converts RAW,CR2,CRW to BMP, FITS, TIFF, PPM  Batch Support for JPEG and BMP files Adding images (5 methods) Making animated GIF files.  Video capture Noise filtering (averaging frames) Motion detection Adding date, time to the viewport Histogram optimization Gamma correction Showing densitogram live Palletes: RGB, grayscale, pseudo-color Saving original and processed frames to BMP