David Martinez - Fall 2024

CS180 - Professor Efros

Images of the Russian Empire: Colorizing the Prokudin-Gorskii photo collection

1. Preprocessing grayscale images with RGB color filters.
2. Apply linear grid search strategy for smaller images. (jpegs)
3. Apply Gaussian Pyramid alignment using varying depths of recursion
4. Bell's and whistles: FFT approach, white balancing, and filters/edge detection

Simple Grid Search

green channel shift: (-5, -2) red channel shift: (-12, -3)

green channel shift: (3, -2) red channel shift: (-3, -2)

green channel shift: (-3, -3) red channel shift: (-7, -3)

Gaussian Pyramid Search Results

Emir

green shift: (-48, -32), red shift(-99, -52)

Church

green shift: (-28, -9), red shift: (-54, -3)

Harvesters

green shift: (-46, -16), red shift(-102, -20)

Icon

green shift: (-41, -23), red shift(-83, -28)

Lady

green shift: (-39, -25), red shift: (-101, -26)

Train

green shift: (-34, -13), red shift: (-64, -34)

Onion Church

green shift: (-28, -40), red shift: (-97, -44)

Self Portrait

green shift: (-72, -41), red shift: (-175, -47)

Melons

green shift: (-72, 0), red shift: (-175, -4)

Sculpture

green shift: (-52, 18), red shift: (-153, 43)

Three Generations

green shift: (-48, -28), red shift: (-115, -16)

Bells and Whistles