Revision as of 15:14, 19 October 2023 by Registered User (→The software topology)
1. Article purpose[edit source]
This article explains how to control the ISP block available within the DCMIPP via the kernel Video4Linux2 (V4L2) framework in Linux® OS context.
2. Short description of DCMIPP ISP[edit source]
2.1. Block diagram[edit source]
The DCMIPP ISP capabilities, instantiated once but common to pipe1 and 2, are the following:
- Statistic removal: to remove unused metadata (like statistics) from received pictures.
- Bad-pixel removal: automatic detection and correction of bad pixels from sensor Array.
- Decimation: one pixel every 1/2/4/8, allows to fit the max 2688 pixels.
- Black level correction: correct black level on each pixels on R/G/B
- Exposure control: amplifies the exposure from 0.0 to 255.99x
- Demosaicing: converts RawBayer to RGB, supports NIR patterns (2x2, 4x4).
- Statistics extract: average R,G,B,L values, dynamic bins.
- Color conversion: color conversion with flexible (fully programmable coefficients)
- Contrast:to enhance the contrast, via luminance.
2.2. The software topology[edit source]
The graph above shows the full media-controller topology of the DCMIPP, including the ISP sub-device dcmipp_main_isp.
2.3. The available controls[edit source]
2.4. The statistic extraction[edit source]
3. Use case examples[edit source]
3.1. Adusting a control[edit source]
4. Debug[edit source]