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This paper presents an algorithm for computing optical flow , shape , motion , lighting , and albedo from an image sequence of a rigidly-moving Lambertian object under distant illumination .
 used for: algorithm, computing optical flow , shape , motion , lighting , and albedo; used for: image sequence, algorithm; feature of: rigidly-moving Lambertian object, image sequence; feature of: distant illumination, rigidly-moving Lambertian object
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 used for: algorithm, computing optical flow , shape , motion , lighting , and albedo; used for: image sequence, algorithm; feature of: rigidly-moving Lambertian object, image sequence; feature of: distant illumination, rigidly-moving Lambertian object