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Sohu Tech Products

Sep 13, 2023 · Artificial Intelligence

Implementing Perceptual Hash for Image Similarity Matching in Mini Programs

To automate matching of theme‑image URLs in a mini‑program skin‑changing feature, the author adopts perceptual hashing—using algorithms such as aHash, pHash and dHash—to generate compact 64‑bit fingerprints, compare them via Hamming distance, and reliably identify visually similar images despite minor edits or scaling.

Hamming distancePythonaHash

0 likes · 11 min read

Implementing Perceptual Hash for Image Similarity Matching in Mini Programs

System Architect Go

Jun 4, 2020 · Artificial Intelligence

Evolution and Underlying Principles of the Billion‑Scale Image Search System at Youpai Image Manager

This article describes the two‑generation evolution of Youpai Image Manager's billion‑scale image search system, explaining the mathematical representation of images, the limitations of MD5, the first‑generation pHash‑ElasticSearch solution, and the second‑generation CNN‑Milvus approach for robust, large‑scale visual similarity search.

CNNElasticsearchImage Search

0 likes · 9 min read