Accepted for publication in the International Journal of Computer Vision Generalization of

pixelpixel^s^zdωr^vθidAθr^-φyiφr^x^aθa^n dadASource directionBrighterDarkerViewer directionViewer directionBrighterDarkerBrighterDarker^z^snwθams^x^z^v nwθamv^x^zθpθ^yφ^x^s^z^vxy^xLr0.15strong masking0.125θrC + C tan120.1Lambertianstrong interreflection0.0750.050.025θr=θi-90-75-60-45-30-15153045607590θrforwardbackwardLr0.15σ=40σ=200.125σ=100.10.075σ=00.050.025θr-90-75-60-45-30-15153045607590fr0.60.5Lrθ=75i0.15φφφiii−φ=0rφ=60rφ=90rθ=75iθi=60θi=45θi=00.125−−0.40.10.30.0750.20.050.10.025θr-90-75-60-45-30-15153045607590θr90-75-60-45-30-15153045607590Lr0.250.20.150.10.05θr-90-75-60-45-30-15153045607590Lr0.20.150.10.05θr-90-75-60-45-30-15153045607590Lr0.20.150.10.05θr-90-75-60-45-30-15153045607590Lr0.120.10.080.060.040.02θr-90-75-60-45-30-15153045607590Lr0.150.1250.10.0750.050.025θr-90-75-60-45-30-15153045607590Lr0.120.10.080.060.040.02θr-90-75-60-45-30-15153045607590sampleθrθicameralight sourceLr0.25θi=45θi=600.2θi=750.150.10.05θr-90-75-60-45-30-15153045607590Lr0.2θi=60φr=450.150.10.05θr-90-75-60-45-30-15153045607590Lr0.14θi=750.12φr=600.10.080.060.040.02θr-90-75-60-45-30-15153045607590Lr0.2θi=45θi=600.15θi=750.10.05θr-90-75-60-45-30-15153045607590ModelMeasurementsLambertianBrightnessXBrightnessXq0.0.1.2.3.4.5pq0.0.1.2.3.4.5.6pLambertianModelHeight0.8Actual shape0.60.40.2-1-0.50.51X