first color film - 1902 - brown university · • predates prokudin-gorskii collection • like...
TRANSCRIPT
![Page 1: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/1.jpg)
First color film - 1902
• Captured by Edward Raymond Turner
• Predates Prokudin-Gorskii collection
• Like Prokudin-Gorskii, it was an additive 3-color system.
• Never successfully commercialized
![Page 2: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/2.jpg)
Recap of Friday
Sampling and Reconstruction
Aliasing and how to prevent it (blur / low pass filters)
Linear filtering and convolution
![Page 3: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/3.jpg)
Slides from Alexei Efros, Fei Fei
Li, Steve Marschner, and others
Linear Filtering (See Szeliski 3.2)
CS 129: Computational Photography
James Hays, Brown, Spring 2011
![Page 4: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/4.jpg)
Slide credit Fei Fei Li
![Page 5: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/5.jpg)
Slide credit Fei Fei Li
![Page 6: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/6.jpg)
Slide credit Fei Fei Li
![Page 7: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/7.jpg)
Slide credit Fei Fei Li
![Page 8: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/8.jpg)
![Page 9: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/9.jpg)
![Page 10: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/10.jpg)
![Page 11: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/11.jpg)
![Page 12: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/12.jpg)
![Page 13: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/13.jpg)
![Page 14: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/14.jpg)
![Page 15: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/15.jpg)
![Page 16: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/16.jpg)
![Page 17: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/17.jpg)
![Page 18: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/18.jpg)
![Page 19: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/19.jpg)
![Page 20: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/20.jpg)
![Page 21: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/21.jpg)
-2.6 -0.33
1.66 10.66
![Page 22: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/22.jpg)
![Page 23: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/23.jpg)
![Page 24: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/24.jpg)
![Page 25: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/25.jpg)
![Page 26: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/26.jpg)
![Page 27: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/27.jpg)
![Page 28: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/28.jpg)
![Page 29: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/29.jpg)
![Page 30: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/30.jpg)
![Page 31: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/31.jpg)
![Page 32: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/32.jpg)
© 2006 Steve Marschner • 40
A gallery of filters
• Box filter – Simple and cheap
• Tent filter – Linear interpolation
• Gaussian filter – Very smooth antialiasing filter
• B-spline cubic – Very smooth
![Page 33: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/33.jpg)
© 2006 Steve Marschner • 41
Box filter
![Page 34: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/34.jpg)
© 2006 Steve Marschner • 42
![Page 35: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/35.jpg)
© 2006 Steve Marschner • 43
![Page 36: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/36.jpg)
© 2006 Steve Marschner • 44
![Page 37: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/37.jpg)
© 2006 Steve Marschner • 48
Yucky details
• What about near the edge? – the filter window falls off the edge of the image
– need to extrapolate
– methods:
• clip filter (black)
• wrap around
• copy edge
• reflect across edge
• vary filter near edge
![Page 38: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/38.jpg)
© 2006 Steve Marschner • 49
Median filters
• A Median Filter operates over a window by selecting the median intensity in the window.
• What advantage does a median filter have over a mean filter?
• Is a median filter a kind of convolution?
Slide by Steve Seitz
![Page 39: First color film - 1902 - Brown University · • Predates Prokudin-Gorskii collection • Like Prokudin-Gorskii, it was an additive 3-color system. • Never successfully commercialized](https://reader033.vdocuments.site/reader033/viewer/2022042809/5f92303c4d6c8d065d1300a4/html5/thumbnails/39.jpg)
© 2006 Steve Marschner • 50
Comparison: salt and pepper noise
Slide by Steve Seitz