Calculating Image Modulation Transfer Function (MTF)
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This text discusses methodologies for calculating Image Modulation Transfer Function (MTF) to enhance image sharpness. The technique applies to various image types including standard photographs and satellite imagery. MTF computation enables quantitative evaluation of edge sharpness and detail preservation capabilities through algorithms like slanted-edge analysis (using ISO 12233 standard) or Fourier transform-based frequency response measurements. Key implementation steps involve edge detection, point spread function (PSF) estimation, and frequency domain conversion using FFT operations. As imaging technology evolves, MTF calculation methods continuously advance to address diverse image processing requirements, making thorough understanding and application of MTF crucial for optimizing image quality and visual perception in computational photography systems.
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