Project 1
Colorizing the Prokudin-Gorskii Photo Collection
Background
To create the images below, I followed a simple process:
- Split The original image into thirds
- When Aligning I disregard 5% on each side to get around misaligned borders
- The images shift through a [-10 10] window on the X and Y axis and use the NCC formula to try to achieve a maximum alignment value.
- For large images I implemented a very basic pyramid technique using
imresizewhich recursively scales images to try to optimize alignment of big files. Currently with NCC most large images complete in a little under 20 seconds.
You can see that for most images NCC works decently, however, it is far from a perfect metric. Unfortunately, I didn’t have much time to implement many extras.
You can click on each image for the moderately sized output.
Example Images NCC
- Green Shift [-3 2]
-
Red Shift [9 0]
- Green Shift [7 0]
-
Red Shift [15 -1]
- Green [1 2]
-
Red [8 3]
- Green Shift [3 2]
-
Red Shift [6 3]
- Green Shift [59 15]
-
Red Shift [122 13]
- Green Shift [11 17]
-
Red Shift [112 -1046]
- Green Shift [53 12]
-
Red Shift [113 10]
- Green Shift [13 -10]
-
Red Shift [68 4]
- Green Shift [56 19]
-
Red Shift [116 28]
- Green Shift [49 8]
-
Red Shift [124 9]
- Green Shift [40 4]
-
Red Shift [88 31]
- Green Shift [51 26]
-
Red Shift [108 36]
- Green Shift [82 7]
-
Red Shift [178 12]
- Green Shift [76 26]
-
Red Shift [173 34]
- Green Shift [18 0]
- Red Shift [137 22]
