BREAKING NEWS
LATEST POSTS
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Zach Arnold – 2020: Dear Hollywood: We Don’t Want to “Go Back to Normal.” Normal Wasn’t Working
https://optimizeyourself.me/dear-hollywood-normal-wasnt-working/
Hollywood’s pre-pandemic “normal” wasn’t sustainable or healthy, particularly for workers who faced long hours, poor work-life balance, and limited diversity. This article calls for the industry to use this post-pandemic period as a chance to reform and prioritize the well-being, creativity, and inclusivity of its workforce, rather than simply returning to old, harmful practices.
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AI Risk Repository – What are the risks from Artificial Intelligence?
The AI Risk Repository has three parts:
- The AI Risk Database captures 700+ risks extracted from 43 existing frameworks, with quotes and page numbers.
- The Causal Taxonomy of AI Risks classifies how, when, and why these risks occur.
- The Domain Taxonomy of AI Risks classifies these risks into seven domains (e.g., “Misinformation”) and 23 subdomains (e.g., “False or misleading information”).
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AI and the Law – Artists Score Major Win in Copyright Case Against AI Art Generators
The court declined to dismiss copyright infringement claims against the AI companies. The order could implicate other firms that used Stable Diffusion, the AI model at issue in the case. The case will move forward to discovery, where the artists could uncover information related to the way in which the AI firms harvested copyrighted materials that were then used to train large language models.
FEATURED POSTS
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Reve Image 1.0 Halfmoon – A new model trained from the ground up to excel at prompt adherence, aesthetics, and typography
A little-known AI image generator called Reve Image 1.0 is trying to make a name in the text-to-image space, potentially outperforming established tools like Midjourney, Flux, and Ideogram. Users receive 100 free credits to test the service after signing up, with additional credits available at $5 for 500 generations—pretty cheap when compared to options like MidJourney or Ideogram, which start at $8 per month and can reach $120 per month, depending on the usage. It also offers 20 free generations per day.
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sRGB vs REC709 – An introduction and FFmpeg implementations
1. Basic Comparison
- What they are
- sRGB: A standard “web”/computer-display RGB color space defined by IEC 61966-2-1. It’s used for most monitors, cameras, printers, and the vast majority of images on the Internet.
- Rec. 709: An HD-video color space defined by ITU-R BT.709. It’s the go-to standard for HDTV broadcasts, Blu-ray discs, and professional video pipelines.
- Why they exist
- sRGB: Ensures consistent colors across different consumer devices (PCs, phones, webcams).
- Rec. 709: Ensures consistent colors across video production and playback chains (cameras → editing → broadcast → TV).
- What you’ll see
- On your desktop or phone, images tagged sRGB will look “right” without extra tweaking.
- On an HDTV or video-editing timeline, footage tagged Rec. 709 will display accurate contrast and hue on broadcast-grade monitors.
2. Digging Deeper
Feature sRGB Rec. 709 White point D65 (6504 K), same for both D65 (6504 K) Primaries (x,y) R: (0.640, 0.330) G: (0.300, 0.600) B: (0.150, 0.060) R: (0.640, 0.330) G: (0.300, 0.600) B: (0.150, 0.060) Gamut size Identical triangle on CIE 1931 chart Identical to sRGB Gamma / transfer Piecewise curve: approximate 2.2 with linear toe Pure power-law γ≈2.4 (often approximated as 2.2 in practice) Matrix coefficients N/A (pure RGB usage) Y = 0.2126 R + 0.7152 G + 0.0722 B (Rec. 709 matrix) Typical bit-depth 8-bit/channel (with 16-bit variants) 8-bit/channel (10-bit for professional video) Usage metadata Tagged as “sRGB” in image files (PNG, JPEG, etc.) Tagged as “bt709” in video containers (MP4, MOV) Color range Full-range RGB (0–255) Studio-range Y′CbCr (Y′ [16–235], Cb/Cr [16–240])
Why the Small Differences Matter
(more…) - What they are
