Method for representing images using quantized embeddings of scale-invariant image features

摘要

Scale-invariant features are extracted from an image. The features are projected to a lower dimensional random projection matrix by multiplying the features by a matrix of random entries. The matrix of random projections is quantized to produce a matrix of quantization indices, which form a query vector for searching a database of images to retrieve metadata related to the image.

主权项

1. A method for representing an image, comprising the steps of:
extracting features from the image, wherein the features are scale-invariant; projecting the features to produce a matrix of random projections by multiplying the features by a matrix of random entries; and quantizing the matrix of random projections to produce a matrix of quantization indices representing the image, wherein the steps are performed by a processor in a client.