Image Processing
LEADTOOLS has over 200 image processing functions like transforms, filters, color conversion, and drawing, some of which are typically found only in high performance end-user programs such as Adobe PhotoShop. Many functions support regions of interest (ROI), allowing only a particular region of an image to be processed. Image processing functions let you:
Change image size, orientation, and appearance:
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Define the bitmap as a display surface where you can use Windows graphics device interface (GDI) functions for drawing or adding text.
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Automatically straighten (deskew) a 1-bit image.
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Automatically straighten (deskew) bank checks.
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Automatically apply binary segmentation (auto-binarize), in order to convert color images to black-and-white while preserving text and improving recognition results
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Remove specks (despeckle) a 1-bit image
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Automatically trim a bitmap to remove blank space around the edges.
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Rotate the image. (Angles can be precise to 100th of a degree.)
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Do fast rotation in 90-degree increments
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Rotate JPEG or CMP compressed images in 90 degree increments or flip them without loss of quality.
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Shear the image in the fashion of a parallelogram. (Angles are precise to 100th of a degree.)
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Change the orientation by flipping the image horizontally or vertically.
Adjust colors and intensities:
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Change brightness using a flat scale.
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Change brightness using gamma correction.
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Change contrast using a flat scale.
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Change contrast using a multi-scale.
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Stretch the range of intensities.
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Remap intensities using a lookup table.
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Create look up tables based on points on a curve or a mathematical function.
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Invert colors.
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Change hue of the entire image or just a range of colors.
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Change saturation.
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Histogram equalize, histogram view and histogram contrast.
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Fill with a specified color.
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Get and put colors of individual pixels.
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Color balancing.
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Load CMYK TIFF files and keep the data in memory as CMYK.
Apply conversions:
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Halftone for display or printing.
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Sharpen or blur.
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Posterize, specifying the number of color planes.
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Mosaic, specifying the tile size.
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Emboss, specifying the lighting direction.
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Soften an image using an average filter.
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Reduce noise using a median or Gaussian filter.
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Add noise in any or all color planes.
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Picturize with a list of images or a single image.
Apply filters:
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Detect ranges of intensity.
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Detect ranges of colors using different color spaces.
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Detect edges using gradient or Laplacian edge detection.
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Detect lines using Sobel, Prewitt, shift and difference, or line segment detection.
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Apply morphological (binary) filters to erode or dilate black objects
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Implement your own spatial filters.
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Combine images using boolean and arithmetic operators, and color masking. (This is useful for combining filtered images with originals.)
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Combine two images so that one appears to be an underlying texture of the other.
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Combine multiple images to create a new image that resembles the current image.
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Combine a list of images to find the average difference between the images.
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Redeye removal.
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Anti-alias the image.
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Apply a sepia or "old photo" look to the image.
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Apply an oil-painting effect.
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Apply a solarization effect.
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Apply Fourier Transforms to images.
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Apply 3D effects: Tunnel, plane, plane bend, etc.
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Apply many other effects including: Swirl, Ripple, Radial Blur, Impressionist, Wave, Shear, Remove Redeye, Cubism, Glow, Age, etc.
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Pass your own matrix to a binary filter.
Perform specialized medical imaging processing:
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Create Kaufmann regions
. The created regions can be used to determine the Kaufmann ratio, which is the size of the corpus callosum divided by the size of the brain sphere. -
Extract the individual slices from a radiographic scanned film
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Process extended grayscale image (10-16 bit signed and unsigned)
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Apply image optimization:
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To an image buffer in memory
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To an entire directory of images, saving the optimized images to another directory
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Including file types:
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JPEG File (FILE_JPEG).
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JPEG 411 File (FILE_JPEG_411).
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JPEG 422 File (FILE_JPEG_422).
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EXIF JPEG 4:1:1 File (FILE_EXIF_JPEG_411).
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EXIF JPEG 4:2:2 File (FILE_EXIF_JPEG_422).
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GIF File (FILE_GIF).
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PNG File (FILE_PNG).
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BMP Without RLE Compression File (FILE_BMP).
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BMP With RLE Compression File (FILE_BMP_RLE).
Use low-level functions to change parts of an image:
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Get and put rows of image data.
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Get and put parts of rows.
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Get and put the colors for individual pixels.
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Process a region within a bitmap.
Supported Platforms
Image Processing - C++ Class Library
Image Processing - Silverlight
Image Processing - Silverlight Windows Phone