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G52IIP 2011-12 Summary

G52IIP 2011-12 Summary. Topic 1 Overview of the course Related topics Image processing Computer vision Computer graphics Digital photography Visualization. G52IIP 2011-12 Summary. Topic 2 Human visual system (HVS) Elements of visual perception Brightness adaptation

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G52IIP 2011-12 Summary

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  1. G52IIP 2011-12 Summary • Topic 1 • Overview of the course • Related topics • Image processing • Computer vision • Computer graphics • Digital photography • Visualization

  2. G52IIP 2011-12 Summary • Topic 2 • Human visual system (HVS) • Elements of visual perception • Brightness adaptation • Brightness discrimination (Perceivable changes at a given adaptation level) • Weber ratio • Mach band pattern • Simultaneous contrast

  3. G52IIP 2011-12 Summary • Topic 2 • A simple image model • Sampling • Quantization

  4. G52IIP 2011-12 Summary • Topic 2 • Basics of colour imaging and colour models • Trichromacy and human colour vision • Colour image formation • Colour models, RGB, YIQ, YCbCr

  5. G52IIP 2011-12 Summary • Topic 3 • Intensity transform/point based processing • Some common intensity transform functions • Gamma correction • Contrast stretching • Dynamic range compression • Histogram processing • Histogram equalization (global and local)

  6. G52IIP 2011-12 Summary • Topic 3 • Spatial filtering • Basic operations • Low-pass filtering • High-pass filtering

  7. G52IIP 2011-12 Summary • Topic 3 • Image transforms • Fourier transform (basic concept, detail math not required) • Power Spectrum (basic concept)

  8. G52IIP 2011-12 Summary • Topic 3 • Frequency domain filtering (fundamental concepts) • The meaning of frequency in an image • Basic steps of filtering in the frequency domain • Low-pass, high-pass, band-pass in the frequency domain

  9. G52IIP 2011-12 Summary • Topic 4 • Image compression • Redundancies • Coding • Inter-pixel (spatial) • Psychovisual • Exploiting redundancies • Hoffman coding • Predictive coding (basic concept, principle) • Sub-sampling • Colour quantization (basic concept)

  10. G52IIP 2011-12 Summary • Topic 4 • JPEG image compression standard • Basic principles of functional building blocks • Down-sampling • DCT • Quantization/quantization table • Hoffman coding

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