Image Processing

Various techniques used for Image Processing. The techniques include:

• Zooming In - downsampling an image
• Zooming Out - upsampling an image. Algorithms implemented are:
  • Nearest Neighbor
  • Linear Interpolation in the x direction
  • Linear Interpolation in the y direction
  • Bilinear
• Bit Removal - Removing a bit plane by setting that bit plane to 0
• Histogram Equalization - Perform histogram equalization on an image. The implemented algorithms are:
  • Global Histogram Equalization
  • Local 3x3 Mask
  • Local 5x5 Mask
  • Local 7x7 Mask
  • Local 9x9 Mask
• Spatial Filtering Restoration - Remove noise from an image. The implemented algorithms are:
  • Arithmetic mean filter
  • Geometric mean filter
  • Harmonic mean filter
  • Contraharmonic mean filter
  • Max filter
  • Min filter
  • Midpoint filter
  • Alpha-trimmed mean filter
• Spatial Filtering Smoothing - Blur and sharpen an image. The implemented algorithms are:
  • Smoothing filter
  • Mean filter
  • Sharpening Laplacian filter
  • High-boost filter
• Image Compression - Various image compression/decompression techniques. The implemented algorithms are:
  • Run Length End (RLE) on grayscale values
  • RLE on Bit Planes
  • Huffman Encoding/Decoding
  • Lempel–Ziv–Welch (LZW) Encoding/Decoding

How To Compile

Type the following into a terminal:

javac -d bin ./src/imgpro/*.java ./src/imgpro/bitchange/*.java ./src/imgpro/bitplane/*.java ./src/imgpro/histogram/*.java ./src/imgpro/imagecompression/*.java ./src/imgpro/restoration/*.java ./src/imgpro/spatialfiltering/*.java ./src/imgpro/zooms/*.java 

How To Run

1. Change into the /bin/ directory
2. Type the following into a terminal:

java imgpro.MainWindow