Atlas demonstration: the free source photo and the computed Aliasing Jaggies. A vehicle drives across a vast, dusty landscape beneath a sunset sky. The horizontal horizons and the vehicle's body display harsh, staircase edges caused by the coarse grid sampling.Image: FORREST CAVALE forrestcavale · CC0 (via Wikimedia Commons), processed for the AtlasView source ↗
Prompt
Apply Aliasing Jaggies, giving the photograph a visibly coarse pixel grid with hard staircase contours and blocky diagonals. Break thin lines into uneven segments and introduce false repeating patterns in dense textures. Use crisp nearest-neighbor edges without smoothing or added grain. Keep the original subject and composition.
Smooth contours become [staircase edges], with [blocky diagonals]and broken fine detail across the photograph.
Principle
The image is sampled on a[coarser pixel grid]without low-pass filtering1, then enlarged using nearest-neighbor interpolation2. Fine details can become false patterns because the grid cannot represent them accurately.
Try it out
Vary the grid spacing and watch diagonal edges become increasingly stepped.
Classification
Calculated image processing result.
Further examples · 9 images
02Aliasing Jaggies, applied to “Milky Way above trees (Unsplash)”A night sky is dotted with distant stars above a dark treeline. The individual stars have become blocky squares, and the silhouette of the trees exhibits distinct stepped contours.Adam Mescher lintroller (photo); processed for the Atlas · CC0 · Wikimedia Commons03Aliasing Jaggies, applied to “London, United Kingdom (Unsplash ffmkD8dm7Zw)”A person cycles through a sunlit park filled with green foliage. The diagonal lines of the bicycle frame and the curved wheels are broken into sharp, jagged blocks.Blubel blubel (photo); processed for the Atlas · CC0 · Wikimedia Commons04Aliasing Jaggies, applied to “Daiki Sagiyama 2017 (Unsplash)”An aerial view captures a cluttered courtyard area between buildings. The complex geometry of the architecture is reduced to a series of harsh, square fragments that distort fine structural details.Daiki Sagiyama daiksa (photo); processed for the Atlas · CC0 · Wikimedia Commons05Aliasing Jaggies, applied to “Jellyfish (Unsplash)”A jellyfish floats through deep blue water, its body covered in fine white spots. The organic, rounded edges of the creature are now defined by rigid, stair-stepped pixels.Kanyon Bollinger kanyonb38 (photo); processed for the Atlas · CC0 · Wikimedia Commons06Aliasing Jaggies, applied to “Montreal Botanical Garden, Montréal, Canada (Unsplash s4dWnySNef8)”A collection of colorful shapes is silhouetted against a deep black void. The circular overlay demonstrates a pure Moire pattern of concentric rings that disintegrate into blocky, checkerboard structures.Dominik Gehl dominikgehl (photo); processed for the Atlas · CC0 · Wikimedia Commons07Aliasing Jaggies, applied to “Yellow lane (Unsplash)”A winding road curves through a dense forest filled with autumn foliage. The fine texture of the leaves and the curve of the asphalt are broken into distinct square blocks, replacing organic shapes with a rigid grid.Alex Jones alexjones (photo); processed for the Atlas · CC0 · Wikimedia Commons08Aliasing Jaggies, applied to “Staring deer (Unsplash)”A close-up portrait shows a deer looking directly toward the viewer in a darkened woods. The fine detail of the fur and the delicate curve of the ear are rendered as sharp, blocky steps due to the coarse sampling.Yangfan Gan gunshot (photo); processed for the Atlas · CC0 · Wikimedia Commons09Aliasing Jaggies, applied to “Cheat Lake in the winter (Unsplash)”Autumnal mountains rise sharply above the calm, flat surface of a lake. The diagonal slopes of the hills are noticeably fractured into a series of square steps rather than smooth inclines.dan carlson dan_carl5on (photo); processed for the Atlas · CC0 · Wikimedia Commons
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