Digital imaging

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This presentation is about digital imaging. It presents some information about the format types of images and other related issues like resolution, compression, raster & vector and color schema. It helps fresh photographers and graphic designers to get the fundamentals of digital image.

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  • Compression: A technique that reduces the file size of bitmap images. Compressed images are used on web pages to improve viewing speed and performance.Compression decreases the file size, but has the added effect of degrading quality. Compare the insets in the left and right images to see the loss of detail.
  • Digital imaging

    1. 1. What isDigital Imaging?The art ofmakingdigital images
    2. 2. Common types of digital image file formatsFile Type Standing for Compression extensionJPEG Joint Photographic Experts Group lossy .jpgTIFF Tagged Image File Format lossless .tifGIF Graphics Interchange Format lossless .gifBMP Bitmap lossless .bmpPNG Portable Network Graphics lossless .pngPDF Portable Document Format lossless .pdfRAW lossless
    3. 3. CompressionThe original, uncompressed image (left) is 11.6 MB. After compression (right) the file size is 363.1K .
    4. 4. ResolutionThe amount of detail in an image. (dpi, ppi, lpi)
    5. 5. Raster vs. Vector Raster image Vector imageComposed of pixels Composed of paths
    6. 6. Benefits Of Working With 16-Bit Images8 bits image @ JPEG 16 bits image @ TIFFRed Green Blue Red Green Blue 256 256 256 65,536 65,536 65,536 16.8 million colors 281 trillion colors
    7. 7. Abdullah Al-Busaidi cs

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