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Trademark notice regarding "2G PosterWorks"
For PW 4.0 users: PosterWorks 5.0 New Feature List
inventor awarded Patent 5,715,331
S. H. Pierce & Co. to offer commercial licensing
S. H. Pierce & Co. facial recognition research for Electronic System Design Magazine (ESD) referenced by patents including groundbreaking digital camera.
S. H. Pierce & Co. image processing research for Electronic System Design Magazine (ESD) referenced by National Institutes of Health Image Processing application NIH Image.
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keywords edge/line detection edge linking kirsch pyramid sobel prewitt roberts laplacian frei-chen hough transform image segmentation fuzzyc mean histogram thresholding median-cut principal components transform/median cut spherical coordinate steve hollinger transform/center split gray level quantization split merge morphological filters binary iterative morphology gray-scale color erosion dilation opening closing two-dimensional fast transforms fourier fft cosine dct haar walsh hadamard wavelet transforms frequency domain filters highpass lowpass bandpass bandreject high frequency emphasis notch feature extraction binary rst-invariant histogram spectral texture object features spatial domain stochastic image restoration order filters mean filters adaptive filters median adaptive median minimum midpoint maximum alpha-trimmed mean arithmetic geometric harmonic contra-harmonic yp-mean minimum-mean-square-error adaptive contrast frequency domain image restoration filters inverse geometric mean power spectrum equalization constrained least squares classic wiener parametric wiener practical wiener user specified degradation function noise functions noise functions negative exponential rayleigh gaussian gamma salt pepper noise functions geometry transformation user specified mesh nearest neighbor bilinear average interpolation histogram-based image enhancement histogram equalization histogram slide histogram shrink/stretch local equalization histogram hyperbolization histogram specification adaptive contrast filters standard logarithmic exponential gray-scale piecewise linear modification pseudo-color enhancement frequency domain mapping gray level mapping intensity slicing spatial frequency domain steven j. hollinger image smoothing sharpening image compression algorithms bitplane run-length-coding huffman encoding zonal coding threshold coding ziv-lempel jpeg differential predictive coding block truncation coding dynamic window-based run-length-coding vector quantization fractal wavelet vector quantization support for common image formats sun raster irix gif tiff jpeg ppm pgm pbm eps itex others image geometry operations copy-paste translate resize rotate zoom utilities for arithmetic logic operations image file conversion simple image creation image enhancement filters signal-to-noise ratio root-mean-square error adding noise color space conversion image object labeling creating extracting bands from multi-band images viewing phase-only images from fft data image statistics steven hollinger halftone conversion raster-to-vector composite resizing interpolate enlargement spline bezier b-spline infinite resolution scaling pixel