CV180x & CV181x ISP Tuning User Guide

Revision History

Revision	Date	Description
0.1.0	2021/06/15	Initial release
0.2.0	2022/09/30	Add some parameter descriptions
0.2.1	2022/10/12	Update AWB module parameters
0.2.2	2022/10/20	Add and remove some descriptions as common versions
0.2.3	2022/10/31	Modify document format
0.2.4	2022/11/22	Modify the overall flow chart of 2-1ISP and the description of LSC calibration
0.2.5	2023/02/07	Update AWB module parameters

Contents

• 1. Disclaimer
• 2. PQ Tuning Text Files Relationship Description
• 3. ISP System Overview
  • 3.1. Function Introduction
  • 3.2. Function Block Diagram
  • 3.3. Introduction to Each Module
• 4. Overview of Image Quality Tuning
  • 4.1. Overview of Image Tuning for IPC Applications
  • 4.2. Image Quality Tuning in Linear Mode
    • 4.2.1. Sensor docking
    • 4.2.2. Sensor and lens calibration
    • 4.2.3. Brightness Dimension
    • 4.2.4. Color Dimension
    • 4.2.5. Contrast Dimension
    • 4.2.6. Sharpness and noise dimensions
  • 4.3. Image Quality Tuning in WDR Mode
    • 4.3.1. WDR mode backlight scene face brightness enhancement tuning method
    • 4.3.2. Brightness Dimension
    • 4.3.3. Motion Trailing Dimension of Composite Zone
    • 4.3.4. Dynamic Range Dimension of Scene
    • 4.3.5. Color Dimension
    • 4.3.6. Contrast Dimension
    • 4.3.7. Sharpness and noise dimensions
    • 4.3.8. Tuning Method of Intense Light Suppression Scene at Night in WDR Mode
    • 4.3.9. Brightness Dimension
    • 4.3.10. Motion Trailing Dimension of Composite Area
    • 4.3.11. Dynamic Range Dimension of Scene
    • 4.3.12. Color Dimension
    • 4.3.13. Contrast Dimension
    • 4.3.14. Sharpness and noise dimensions
• 5. Module Function
  • 5.1. Black Level
    • 5.1.1. Black Level Calibration Method
      • 5.1.1.1. Environment and Related Equipments Preparation
      • 5.1.1.2. Black Level Calibration Tool Interface
      • 5.1.1.3. Black Level Calibration Step
  • 5.2. DPC
    • 5.2.1. DPC Tuning Method
      • 5.2.1.1. Functional Description
      • 5.2.1.2. Key Parameters
      • 5.2.1.3. Tuning Steps
  • 5.3. CrossTalk Removal
    • 5.3.1. CrossTalk Removal Tuning Method
      • 5.3.1.1. Function Description
      • 5.3.1.2. Key Parameters
      • 5.3.1.3. Tuning Steps
  • 5.4. Mesh Lens Shading Correction (MLSC)
    • 5.4.1. MLSC Calibration Method
      • 5.4.1.1. Environment and Related Equipments Preparation
      • 5.4.1.2. MLSC Calibration Tool Interface
      • 5.4.1.3. MLSC Calibration Steps
    • 5.4.2. MLSC Tuning Method
      • 5.4.2.1. Function Description
      • 5.4.2.2. Key Parameters
      • 5.4.2.3. Tuning Steps
  • 5.5. Radial Shading Correction (RLSC)
    • 5.5.1. RLSC Calibration Methods
      • 5.5.1.1. Environment and Related Equipments Preparation
      • 5.5.1.2. RLSC Calibration Tool Interface
      • 5.5.1.3. RLSC Calibration Steps
    • 5.5.2. RLSC Tuning Method
      • 5.5.2.1. Function Description
      • 5.5.2.2. Key Parameters
      • 5.5.2.3. Tuning Steps
  • 5.6. White Balance
    • 5.6.1. AWB Calibration Method
      • 5.6.1.1. Environment and Related Equipments Preparation
      • 5.6.1.2. AWB Calibration Tool Interface
      • 5.6.1.3. AWB Calibration Steps
    • 5.6.2. AWB Tuning Method
      • 5.6.2.1. Function Description
      • 5.6.2.2. Key Parameters
      • 5.6.2.3. Tuning Steps
  • 5.7. BNR
    • 5.7.1. BNR Calibration Method
      • 5.7.1.1. Environment and Related Equipment Preparation
      • 5.7.1.2. BNR Calibration Tool Interface
      • 5.7.1.3. BNR Calibration Steps
    • 5.7.2. BNR Tuning Method
      • 5.7.2.1. Function Description
      • 5.7.2.2. Key Parameters
      • 5.7.2.3. Tuning Steps
  • 5.8. Demosaic
    • 5.8.1. Demosaic Tuning Method
      • 5.8.1.1. Function Description
      • 5.8.1.2. Key Parameters
      • 5.8.1.3. Tuning Steps
  • 5.9. WDR
    • 5.9.1. WDR Tuning Method
      • 5.9.1.1. Function Description
      • 5.9.1.2. Key Parameters
      • 5.9.1.3. Tuning Steps
  • 5.10. DRC
    • 5.10.1. DRC Tuning method
      • 5.10.1.1. Function Description
      • 5.10.1.2. Key Parameters
      • 5.10.1.3. Tuning Steps
  • 5.11. CCM
    • 5.11.1. CCM Calibration Method
      • 5.11.1.1. Environment and Related Equipment Preparation
      • 5.11.1.2. CCM Calibration Tool Interface
      • 5.11.1.3. CCM Calibratin Steps
    • 5.11.2. CCM Tuning Method
      • 5.11.2.1. Function Description
      • 5.11.2.2. Key Parameters
      • 5.11.2.3. Tuning Steps
  • 5.12. Gamma
    • 5.12.1. Gamma Tuning Method
      • 5.12.1.1. Function Description
      • 5.12.1.2. Key Parameters
      • 5.12.1.3. GammaCOEFFI and SlopeAtZero Parameter Description
      • 5.12.1.4. Tuning Custom Curve with Parameters
      • 5.12.1.5. Using Control Points to Tune Custom Curves
  • 5.13. Dehaze
    • 5.13.1. Dehaze Tuning Method
      • 5.13.1.1. Function Description
      • 5.13.1.2. Key Parameters
      • 5.13.1.3. Tuning Steps
      • 5.13.1.4. Dehaze Parameters
  • 5.14. RGBCAC
    • 5.14.1. RGBCAC Tuning Method
      • 5.14.1.1. Function Description
      • 5.14.1.2. Key Parameters
      • 5.14.1.3. Tuning Steps
  • 5.15. LCAC
    • 5.15.1. LCAC Tuning Method
      • 5.15.1.1. Function Description
      • 5.15.1.2. Key Parameters
      • 5.15.1.3. Tuning Steps
  • 5.16. CLUT
    • 5.16.1. CLUT Calibration Method
      • 5.16.1.1. Environment and Related Equipment Preparation
      • 5.16.1.2. CLUT Calibration Tool Interface
      • 5.16.1.3. CLUT Calibration Steps
    • 5.16.2. CLUT Tuning Method
      • 5.16.2.1. Function Description
      • 5.16.2.2. Key Parameters
      • 5.16.2.3. Tuning Steps
  • 5.17. PreSharpen
    • 5.17.1. PreSharpen Tuning Method
      • 5.17.1.1. Function Description
      • 5.17.1.2. Key Parameters
      • 5.17.1.3. Tuning Steps
  • 5.18. 3DNR
    • 5.18.1. 3DNR Tuning Method
      • 5.18.1.1. Function Description
      • 5.18.1.2. Key Parameters
      • 5.18.1.3. Tuning Steps
  • 5.19. YNR
    • 5.19.1. YNR Tuning Method
      • 5.19.1.1. Function Description
      • 5.19.1.2. Key Parameters
      • 5.19.1.3. Tuning Steps
  • 5.20. CNR
    • 5.20.1. CNR Tuning Method
      • 5.20.1.1. Function Description
      • 5.20.1.2. Key Parameters
      • 5.20.1.3. Tuning Steps
  • 5.21. CA
    • 5.21.1. CA Tuning Method
      • 5.21.1.1. Function Description
      • 5.21.1.2. Key Parameters
      • 5.21.1.3. Precautions
  • 5.22. CAC
    • 5.22.1. CAC Tuning Method
      • 5.22.1.1. Function Description
      • 5.22.1.2. Key Parameters
      • 5.22.1.3. Tuning Steps
  • 5.23. DCI
    • 5.23.1. DCI Tuning Method
      • 5.23.1.1. Function Description
      • 5.23.1.2. Key Parameters
      • 5.23.1.3. Tuning Steps
  • 5.24. LDCI
    • 5.24.1. LDCI Tuning Method
      • 5.24.1.1. Fonction Discription
      • 5.24.1.2. Key Parameters
      • 5.24.1.3. Tuning Steps
  • 5.25. CA_Lite
    • 5.25.1. CA_Lite Tuning Method
      • 5.25.1.1. Fonction Discription
      • 5.25.1.2. Key Parameters
      • 5.25.1.3. Tuning Steps
  • 5.26. Sharpen
    • 5.26.1. Sharpen Tuning Method
      • 5.26.1.1. Function Description
      • 5.26.1.2. Key Parameters
      • 5.26.1.3. Tuning Steps
  • 5.27. Auto Exposure
    • 5.27.1. Auto Exposure Tuning Method
      • 5.27.1.1. Fonction Discription
      • 5.27.1.2. Key Parameters
      • 5.27.1.3. Tuning Steps