Ricoh C252 - Image Processing; Image Processing Flow

IMAGE PROCESSING
SM 6-11 C252
Detailed
Descriptions
6.4 IMAGE PROCESSING
6.4.1 IMAGE PROCESSING FLOW
Image processing is done by the IPU (Image Processing Unit) on the MPU board,
following the steps shown below.
Shading Correction
↓
Gamma Correction
↓
MTF Filtering
↓
Grayscale Processing
Shading Correction:
Corrects errors in the signal level for each pixel using the white plate.
Gamma Correction:
Background erase
MTF Filtering:
Reduces the contrast.
Grayscale Processing:
Compares each pixel with surrounding pixels to enhance the image.
• Text mode: Binary processing
• Photo mode: Error diffusion