How Japan Search's Image Similarity Search API Works
Japan Search (https://jpsearch.go.jp) provides an “Image AI Search” feature that supports both text-based motif search and image upload similarity search. The official API guide documents text search (text2image parameter) and searching by existing item ID (image parameter), but says nothing about searching by uploading an image file. Inspecting the Web UI’s network traffic revealed that image upload search is implemented through a 3-step API flow. The 3-step API flow Step 1: Extract a feature vector from the image Endpoint: POST https://jpsearch.go.jp/dl/api/imagefeatures/ ...