Sprite Sheet — grid-2x2 (2×2)
RGBA sprite sheet (2×2 cells of 64px) with numbered frames for atlas / CSS-sprite tools.
Specifications
- Cell
- 64
- Cols
- 2
- Rows
- 2
- Frames
- 4
What is a .png file?
PNG (Portable Network Graphics) is a raster image format using lossless DEFLATE compression. It supports full 8- or 16-bit-per-channel truecolor, palette, and greyscale modes with an optional alpha channel, but no animation. It is the standard choice for screenshots, logos, and graphics with sharp edges or transparency.
How to use this file
Use an example PNG to test image decoders, alpha-compositing, thumbnail generators, and format converters, or to verify that a pipeline preserves transparency and color depth on round-trip.
How to use this file for testing
“Sprite Sheet — grid-2x2 (2×2)” is a deterministic Novus Examples fixture for Computer vision, Conversion testing. A rendered detection scene annotated in COCO, YOLO, and Pascal-VOC formats — for testing annotation loaders, format converters, and vision pipelines against a known image.
Documented properties for this file: 2 rows. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
For image AI or enhancement tools, run the model or filter on this file and diff against the clean or ground-truth companion in the same group when available. Keep seeds and documented damage parameters in your evaluation notes so regressions are attributable.
Code examples
<img src="sprite-grid-2x2.png" alt="Example image" width="640" loading="lazy">Related files
- tiffMultipage Scene TIFF (3 pages)Three-page TIFF of synthetic scenes — fixture for multipage TIFF loaders and page extractors.
- pngCodec Ladder — Blocks PNG (288px)Same blocks scene encoded as png — rung on the Wave E codec ladder for quality / convert comparisons.
- jpgCodec Ladder — Blocks Q20 (288px)Same blocks scene encoded as q20 — rung on the Wave E codec ladder for quality / convert comparisons.
- jpgCodec Ladder — Blocks Q50 (288px)Same blocks scene encoded as q50 — rung on the Wave E codec ladder for quality / convert comparisons.
- jpgCodec Ladder — Blocks Q80 (288px)Same blocks scene encoded as q80 — rung on the Wave E codec ladder for quality / convert comparisons.
- webpCodec Ladder — Blocks WEBP (288px)Same blocks scene encoded as webp — rung on the Wave E codec ladder for quality / convert comparisons.
Generated by generation/images_wave_e.py. Free for any use, no attribution required — license.