Validating the Use of Compression for Automotive Displays
A study verifying VDC-M's visually lossless compression properties demonstrates that MIPI DSI-2 offers a solution to the growing bandwidth challenges in next-generation vehicles
As automotive industry trends in connectivity, automation, sharing and electrification drive an increasing number of high-resolution in-vehicle displays, the use of visually lossless image compression becomes essential for display connectivity solutions to meet stringent data bandwidth, power, weight and electromagnetic compatibility requirements.
A new MIPI Alliance white paper, Validating the Use of Compression for Automotive Displays, explores the impact of these trends on in-vehicle displays and shares the results of a recent image compression study conducted by the MIPI Display Working Group. The study focused on the ability for the Video Electronics Standards Association Display Compression-M (VDC-M) codec, as adopted within the MIPI Display Serial Interface 2 (DSI-2℠) protocol, to provide visually lossless compression for automotive images.
Scope of the White Paper
The paper provides a detailed description of the test methodology, which used customized automotive-specific test images to evaluate the quality of the VDC-M compression algorithm using a focused test procedure inspired by the ISO/IEC 29170-2 test protocol. The study results concluded that all the test images, when compressed using the VDC-M codec, met the essential objective of being visually lossless.
The paper includes the following sections:
1.1. Automotive Trends
1.2. Automotive Display Configurations and Requirements
- Overview of Study
- Study Phases
3.1. Phase 1—Generate Source Images
3.2. Phase 2—Generate Test Images
3.3. Phase 3—Run Limited Subjective Quality Trial
3.4. Phase 4—Analyze Results and Generate Report
- Test Results
4.1. Non-Flicker Side-by-Side Study Results
4.2. Flicker Interleaved Study Results
- Annex A. Recommended Sources of Further Information
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