Filtering Removing components from an image is know as “image filtering”. If we remove the high frequency components, we tend to remove the noise. This.

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Presentation transcript:

Filtering Removing components from an image is know as “image filtering”. If we remove the high frequency components, we tend to remove the noise. This smooths the image.

Image Filtering

Original Image

Filtered, or Smoothed Image

Time of Flight Systems

Lines of Response Revisited. Coordinate localization (Forming the LOR) Image formation In PET Lines of Response Revisited. Timing Window Coordinate localization (Forming the LOR) Sinogram Image Reconstruction

Image Reconstruction Direct Image Reconstruction BackProjection Algebraic Reconstruction

Time of Flight Systems Direct Image Reconstruction

Backprojection

Iterative “Algabraic” Reconstruction

Pixel Weighting Factors