| Classifications | Code | Applications | Subscribe |
|---|
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| APPLICATIONS | 382/100000 | 0 | |
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| Mail processing | 382/101000 | 0 | |
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| ZIP code | 382/102000 | 0 | |
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| Target tracking or detecting | 382/103000 | 0 | |
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| Vehicle or traffic control (e.g., auto, bus, or train) | 382/104000 | 0 | |
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| License plate | 382/105000 | 0 | |
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| Range or distance measuring | 382/106000 | 0 | |
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| Motion or velocity measuring | 382/107000 | 0 | |
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| Surface texture or roughness measuring | 382/108000 | 0 | |
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| Seismic or geological sample measuring | 382/109000 | 0 | |
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| Animal, plant, or food inspection | 382/110000 | 0 | |
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| Textiles or clothing | 382/111000 | 0 | |
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| Document or print quality inspection (e.g., newspaper, photographs, etc.) | 382/112000 | 0 | |
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| Reading maps, graphs, drawings, or schematics | 382/113000 | 0 | |
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| Reading aids for the visually impaired | 382/114000 | 0 | |
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| Personnel identification (e.g., biometrics) | 382/115000 | 0 | |
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| Using a combination of features (e.g., signature and fingerprint) | 382/116000 | 0 | |
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| Using a characteristic of the eye | 382/117000 | 0 | |
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| Using a facial characteristic | 382/118000 | 0 | |
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| Using a signature | 382/119000 | 0 | |
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| Sensing pressure together with speed or acceleration | 382/120000 | 0 | |
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| Sensing pressure only | 382/121000 | 0 | |
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| Sensing speed or acceleration only | 382/122000 | 0 | |
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| Sensing geometrical properties | 382/123000 | 0 | |
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| Using a fingerprint | 382/124000 | 0 | |
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| Extracting minutia such as ridge endings and bifurcations | 382/125000 | 0 | |
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| With a guiding mechanism for positioning finger | 382/126000 | 0 | |
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| With a prism | 382/127000 | 0 | |
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| Biomedical applications | 382/128000 | 0 | |
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| DNA or RNA pattern reading | 382/129000 | 0 | |
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| Producing difference image (e.g., angiography) | 382/130000 | 0 | |
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| Tomography (e.g., CAT scanner) | 382/131000 | 0 | |
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| X-ray film analysis (e.g., radiography) | 382/132000 | 0 | |
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| Cell analysis, classification, or counting | 382/133000 | 0 | |
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| Blood cells | 382/134000 | 0 | |
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| Reading paper currency | 382/135000 | 0 | |
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| Reading coins | 382/136000 | 0 | |
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| Reading bank checks (e.g., documents bearing E-13B type characters) | 382/137000 | 0 | |
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| Reading monetary amount | 382/138000 | 0 | |
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| Reading MICR data | 382/139000 | 0 | |
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| Including an optical imager or reader | 382/140000 | 0 | |
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| Manufacturing or product inspection | 382/141000 | 0 | |
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| Bottle inspection | 382/142000 | 0 | |
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| Inspection of packaged consumer goods | 382/143000 | 0 | |
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| Mask inspection (e.g., semiconductor photomask) | 382/144000 | 0 | |
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| Inspection of semiconductor device or printed circuit board | 382/145000 | 0 | |
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| Measuring external leads | 382/146000 | 0 | |
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| Inspecting printed circuit boards | 382/147000 | 0 | |
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| At plural magnifications or resolutions | 382/148000 | 0 | |
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| Fault or defect detection | 382/149000 | 0 | |
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| Faulty soldering | 382/150000 | 0 | |
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| Alignment, registration, or position determination | 382/151000 | 0 | |
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| Tool, workpiece, or mechanical component inspection | 382/152000 | 0 | |
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| Robotics | 382/153000 | 0 | |
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| 3-D or stereo imaging analysis | 382/154000 | 0 | |
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| LEARNING SYSTEMS | 382/155000 | 0 | |
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| Neural networks | 382/156000 | 0 | |
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| Network learning techniques (e.g., back propagation) | 382/157000 | 0 | |
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| Network structures | 382/158000 | 0 | |
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| Trainable classifiers or pattern recognizers (e.g., adaline, perceptron) | 382/159000 | 0 | |
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| Generating a standard by statistical analysis | 382/160000 | 0 | |
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| Alphanumerics | 382/161000 | 0 | |
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| COLOR IMAGE PROCESSING | 382/162000 | 0 | |
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| Drop-out color in image (i.e., color to be removed) | 382/163000 | 0 | |
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| Image segmentation using color | 382/164000 | 0 | |
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| Pattern recognition or classification using color | 382/165000 | 0 | |
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| Compression of color images | 382/166000 | 0 | |
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| Color correction | 382/167000 | 0 | |
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| HISTOGRAM PROCESSING | 382/168000 | 0 | |
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| With a gray-level transformation (e.g., uniform density transformation) | 382/169000 | 0 | |
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| With pattern recognition or classification | 382/170000 | 0 | |
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| For segmenting an image | 382/171000 | 0 | |
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| For setting a threshold | 382/172000 | 0 | |
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| IMAGE SEGMENTATION | 382/173000 | 0 | |
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| Using projections (i.e., shadow or profile of characters) | 382/174000 | 0 | |
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| Separating document regions using preprinted guides or markings | 382/175000 | 0 | |
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| Distinguishing text from other regions | 382/176000 | 0 | |
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| Segmenting individual characters or words | 382/177000 | 0 | |
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| Separating touching or overlapping characters | 382/178000 | 0 | |
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| Segmenting hand-printed characters | 382/179000 | 0 | |
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| Region labeling (e.g., page description language) | 382/180000 | 0 | |
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| PATTERN RECOGNITION | 382/181000 | 0 | |
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| Limited to specially coded, human-readable characters | 382/182000 | 0 | |
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| Characters formed entirely of parallel bars (e.g., CMC-7) | 382/183000 | 0 | |
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| With separate timing or alignment marks | 382/184000 | 0 | |
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| Ideographic characters (e.g., Japanese or Chinese) | 382/185000 | 0 | |
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| Unconstrained handwriting (e.g., cursive) | 382/186000 | 0 | |
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| On-line recognition of handwritten characters | 382/187000 | 0 | |
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| Writing on ordinary surface (i.e., electronics are in pen) | 382/188000 | 0 | |
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| With a display | 382/189000 | 0 | |
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| Feature extraction | 382/190000 | 0 | |
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| Multispectral features (e.g., frequency, phase) | 382/191000 | 0 | |
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| Feature counting | 382/192000 | 0 | |
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| Counting intersections of scanning lines with pattern | 382/193000 | 0 | |
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| Counting individual pixels or pixel patterns | 382/194000 | 0 | |
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| Local or regional features | 382/195000 | 0 | |
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| Slice codes | 382/196000 | 0 | |
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| Directional codes and vectors (e.g., Freeman chains, compasslike codes) | 382/197000 | 0 | |
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| Extracted from alphanumeric characters | 382/198000 | 0 | |
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| Pattern boundary and edge measurements | 382/199000 | 0 | |
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| Measurements made on alphanumeric characters | 382/200000 | 0 | |
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| Point features (e.g., spatial coordinate descriptors) | 382/201000 | 0 | |
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| Linear stroke analysis (e.g., limited to straight lines) | 382/202000 | 0 | |
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| Shape and form analysis | 382/203000 | 0 | |
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| Topological properties (e.g., number of holes in a pattern, connectivity, etc.) | 382/204000 | 0 | |
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| Local neighborhood operations (e.g., 3x3 kernel, window, or matrix operator) | 382/205000 | 0 | |
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| Global features (e.g., measurements on image as a whole, such as area, projections, etc.) | 382/206000 | 0 | |
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| Waveform analysis | 382/207000 | 0 | |
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| With a tapped delay line | 382/208000 | 0 | |
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| Template matching (e.g., specific devices that determine the best match) | 382/209000 | 0 | |
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| Spatial filtering (e.g., holography) | 382/210000 | 0 | |
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| With electrically controlled light modulator or filter | 382/211000 | 0 | |
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| Nonholographic optical mask or transparency | 382/212000 | 0 | |
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| Using both positive and negative masks or transparencies | 382/213000 | 0 | |
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| With a display | 382/214000 | 0 | |
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| Using dynamic programming or elastic templates (e.g., warping) | 382/215000 | 0 | |
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| At multiple image orientations or positions | 382/216000 | 0 | |
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| Electronic template | 382/217000 | 0 | |
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| Comparator | 382/218000 | 0 | |
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| Determining both similarities and differences | 382/219000 | 0 | |
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| Calculating weighted similarity or difference (e.g., don`t-care areas) | 382/220000 | 0 | |
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| Counting difference pixels | 382/221000 | 0 | |
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| Using an Exclusive-OR gate | 382/222000 | 0 | |
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| Resistor matrix | 382/223000 | 0 | |
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| Classification | 382/224000 | 0 | |
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| Cluster analysis | 382/225000 | 0 | |
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| Sequential decision process (e.g., decision tree structure) | 382/226000 | 0 | |
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| With a multilevel classifier | 382/227000 | 0 | |
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| Statistical decision process | 382/228000 | 0 | |
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| Context analysis or word recognition (e.g., character string) | 382/229000 | 0 | |
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| Trigrams or digrams | 382/230000 | 0 | |
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| Checking spelling for recognition | 382/231000 | 0 | |
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| IMAGE COMPRESSION OR CODING | 382/232000 | 0 | |
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| Including details of decompression | 382/233000 | 0 | |
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| Parallel coding architecture | 382/234000 | 0 | |
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| Substantial processing of image in compressed form | 382/235000 | 0 | |
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| Interframe coding (e.g., difference or motion detection) | 382/236000 | 0 | |
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| Gray level to binary coding | 382/237000 | 0 | |
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| Predictive coding | 382/238000 | 0 | |
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| Adaptive coding (i.e., changes based upon history, activity, busyness, etc.) | 382/239000 | 0 | |
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| Pyramid, hierarchy, or tree structure | 382/240000 | 0 | |
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| Polygonal approximation | 382/241000 | 0 | |
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| Contour or chain coding (e.g., Bezier) | 382/242000 | 0 | |
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| Shape, icon, or feature-based compression | 382/243000 | 0 | |
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| Lossless compression | 382/244000 | 0 | |
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| Run-length coding | 382/245000 | 0 | |
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| Huffman or variable-length coding | 382/246000 | 0 | |
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| Arithmetic coding | 382/247000 | 0 | |
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| Transform coding | 382/248000 | 0 | |
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| Fractal | 382/249000 | 0 | |
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| Discrete cosine or sine transform | 382/250000 | 0 | |
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| Quantization | 382/251000 | 0 | |
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| Error diffusion or dispersion | 382/252000 | 0 | |
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| Vector quantization | 382/253000 | 0 | |
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| IMAGE ENHANCEMENT OR RESTORATION | 382/254000 | 0 | |
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| Focus measuring or adjusting (e.g., deblurring) | 382/255000 | 0 | |
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| Object boundary expansion or contraction | 382/256000 | 0 | |
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| Dilation or erosion (e.g., opening or closing) | 382/257000 | 0 | |
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| Line thinning or thickening | 382/258000 | 0 | |
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| Skeletonizing | 382/259000 | 0 | |
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| Image filter | 382/260000 | 0 | |
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| Adaptive filter | 382/261000 | 0 | |
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| Median filter | 382/262000 | 0 | |
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| Highpass filter (i.e., for sharpening or enhancing details) | 382/263000 | 0 | |
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| Lowpass filter (i.e., for blurring or smoothing) | 382/264000 | 0 | |
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| Recursive filter | 382/265000 | 0 | |
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| Edge or contour enhancement | 382/266000 | 0 | |
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| Minimize discontinuities in dot-matrix image data (i.e., connecting or merging the dots) | 382/267000 | 0 | |
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| Minimize discontinuities at boundaries of image blocks (i.e., reducing blocking effects or effects of wrap-around) | 382/268000 | 0 | |
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| Minimize jaggedness in edges (e.g., anti-aliasing) | 382/269000 | 0 | |
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| Variable threshold, gain, or slice level | 382/270000 | 0 | |
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| Based on the results of a count | 382/271000 | 0 | |
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| Based on a local average, mean, or median | 382/272000 | 0 | |
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| Based on peak levels | 382/273000 | 0 | |
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| Intensity, brightness, contrast, or shading correction | 382/274000 | 0 | |
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| Artifact removal or suppression (e.g., distortion correction) | 382/275000 | 0 | |
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| IMAGE TRANSFORMATION OR PREPROCESSING | 382/276000 | 0 | |
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| Transforming each dimension separately | 382/277000 | 0 | |
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| Correlation | 382/278000 | 0 | |
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| Convolution | 382/279000 | 0 | |
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| Fourier transform | 382/280000 | 0 | |
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| Walsh, Hough, or Hadamard transform | 382/281000 | 0 | |
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| Selecting a portion of an image | 382/282000 | 0 | |
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| Using a mask | 382/283000 | 0 | |
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| Combining image portions (e.g., portions of oversized documents) | 382/284000 | 0 | |
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| Mapping 2-D image onto a 3-D surface | 382/285000 | 0 | |
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| Measuring image properties (e.g., length, width, or area) | 382/286000 | 0 | |
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| Detecting alignment marks | 382/287000 | 0 | |
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| Determining center of gravity or moment | 382/288000 | 0 | |
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| Determining amount an image is rotated or skewed | 382/289000 | 0 | |
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| Where the image is a character, word, or text | 382/290000 | 0 | |
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| Determining the position of an object | 382/291000 | 0 | |
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| Where the object is a character, word, or text | 382/292000 | 0 | |
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| Changing the image coordinates | 382/293000 | 0 | |
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| Registering or aligning multiple images to one another | 382/294000 | 0 | |
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| To position or translate an image | 382/295000 | 0 | |
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| To rotate an image | 382/296000 | 0 | |
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| Rotation of image is limited to 90 degrees, 180 degrees, or 270 degrees | 382/297000 | 0 | |
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| To change the scale or size of an image | 382/298000 | 0 | |
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| Raising or lowering the image resolution (e.g., subpixel accuracy) | 382/299000 | 0 | |
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| Interpolation | 382/300000 | 0 | |
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| Where the image is an alphanumeric character | 382/301000 | 0 | |
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| Multilayered image transformations | 382/302000 | 0 | |
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| Pipeline processing | 382/303000 | 0 | |
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| Parallel processing | 382/304000 | 0 | |
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| Image storage or retrieval | 382/305000 | 0 | |
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| Using identification indicia on document | 382/306000 | 0 | |
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| General purpose image processor | 382/307000 | 0 | |
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| Morphological operations (i.e., local neighborhood operations) | 382/308000 | 0 | |