SPRAD86 March   2023 AM62A3 , AM62A3-Q1 , AM62A7 , AM62A7-Q1 , AM68A , AM69A

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Tuning Overview
  5. 3Hardware Requirement
  6. 4Software Requirement
    1. 4.1 Processor SDK Linux
    2. 4.2 TI's Reference Imaging Software
    3. 4.3 ISP Tuning Tool
  7. 5Sensor Software Development and Integration
    1. 5.1 Adding Sensor Driver to SDK
    2. 5.2 Updating GStreamer Plugins to Support the Sensor
      1. 5.2.1 Update TIOVX Modules
        1. 5.2.1.1 Source Code Change
        2. 5.2.1.2 Rebuild Modules
      2. 5.2.2 Update GStreamer Plugins
        1. 5.2.2.1 Source Code Change
        2. 5.2.2.2 Rebuild Plugins
        3. 5.2.2.3 Verify New Sensor in GStreamer Plugin
  8. 6Tuning Procedure
    1. 6.1 Verify Functional Operation of Camera Capturing
    2. 6.2 Enable Camera Streaming with Initial VPAC Configuration
      1. 6.2.1 Generate Configuration Files
      2. 6.2.2 Generate DCC Binary Files
      3. 6.2.3 Stream Video with the Initial Configuration
    3. 6.3 Adjust Camera Mounting
    4. 6.4 Capture Raw Images and Perform Basic Tuning
      1. 6.4.1 Launch the Tuning Tool and Create a Project
      2. 6.4.2 Tuning Order
      3. 6.4.3 Black Level Subtraction
      4. 6.4.4 Hardware 3A (H3A)
      5. 6.4.5 Auto White Balance (AWB)
        1. 6.4.5.1 Capture Raw Images for Different Lighting Conditions
        2. 6.4.5.2 Tuning AWB
      6. 6.4.6 Color Correction
    5. 6.5 Perform Fine Tuning
  9. 7Summary

3 Hardware Requirement

The necessary hardware equipment to perform ISP tuning for a raw camera includes:

  • AM62A Starter Kit EVM (SK EVM) or a custom board with the AM62A SOC. For the complete EVM setup, see the AM62A SK EVM Quick Start Guide.
  • The camera and all necessary accessories to connect the camera to the AM62A SK EVM. For how to connect an IMX219 camera to the EVM, see the AM62A Academy. From the Academy main page, go to "Evaluating Linux" -> "Tour of TI Linux" -> "Camera".
  • A light box:
    • With calibrated light sources, typically ranging from 2700K to 6500K at least
    • More light sources are needed if wider range of color temperatures is required
  • An XRite Color Checker Chart. Different chart sizes may be needed depending on the setup.
  • A light meter and/or a chroma meter for monitoring and recording lighting conditions.
  • Tripods or mounts as needed to hold the camera securely at a desired position. #GUID-F12F3617-654E-4E7F-AE42-3ABD665A98EB shows an example of such setup.
GUID-20230224-SS0I-86WP-QV7W-R263ZTLMGN7X-low.jpg Figure 3-1 Tuning Hardware and Equipment Setup