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HDR Image Formats (V): Understanding Headroom in Gainmap

A seemingly redundant parameter: The role and correct writing method of Alternate HDR Headroom in the ISO 21496-1 standard

Assembling DNG To Get Day0 Support For New Cameras

Use LibRAW to break down RAW components, then manually piece together a usable DNG file with PiDNG.

A First Look at Mobile Phone Log: OPPO Log as an Example

Maybe it’s just a selling point mentioned at a launch event, but surely no one takes it seriously?

The Artistic Journey of a Green Bean: DIY Coffee Roasting

Pros and cons of home roasting: Matchbox H7S Lite Experience

A New Python AVIF Encoding Option: ImageCodecs

ImageCodecs now supports colour space and transfer function parameters.

(Temp) CIC 33 Paper Demonstration

Visual Matching Experiment and Tone Mapping based on CAM16-UCS

HongKong

(5 Images) Keep updating during CIC 33

Geekon Monitor Unboxing: High-end Aspiration, Workshop Reality

A bold attempt at a super-high-spec product from a mysterious little workshop, only to suspect I’ve bought a monitor that has passed through eighteen hands.

Solving WSL Installation Failure Caused by Invisible Hyper-V

Notes in installation of WSL2 for Codex, unknown issue about Hyper-V

Decoding an Adaptive HDR Tone Mapping Method (Wang, 2025)

Breaking down an innovative tone mapping algorithm and exploring how it balances luminance compression with detail preservation.