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Hisense’s Four-Primary TV: Colour Gamut and Visiual Health

How the added cyan LED affects gamut coverage and its potential impact on human circadian rhythm

2026.01.10

Bit Packing in DNG Images and Its Implementation

Understanding 10/12/14-bit image packing algorithms and solving Numpy slice alignment and padding issues

2026.01.03

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

2025.12.17

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.

2025.12.07

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?

2025.11.25

The Artistic Journey of a Green Bean: DIY Coffee Roasting

Pros and cons of home roasting: Matchbox H7S Lite Experience

2025.11.16

A New Python AVIF Encoding Option: ImageCodecs

ImageCodecs now supports colour space and transfer function parameters.

2025.11.10

(Temp) CIC 33 Paper Demonstration

Visual Matching Experiment and Tone Mapping based on CAM16-UCS

2025.10.31

HongKong

(5 Images) Keep updating during CIC 33

2025.10.26

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.

2025.10.23
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