Colorizing Images and Video by Scribbling 272
Guspaz writes "Up until now, colorizing a video or image has been a painstaking and mostly manual task. However, researchers in Israel have come up with a new way of colorizing images just by making a few scribbles. The technique works on the premise that 'neighboring pixels in space-time that have similar intensities should have similar colors,' and also allows colorization of videos by 'marking' about one in ten frames."
A play on history (Score:4, Interesting)
Seems simple but... (Score:5, Interesting)
Re:Ummmmm (Score:5, Interesting)
No. Fill just goes until it meets a boundary. This colorization is a lot smarter than that. It appears to notice the boundarys by the sudden changes of the temperature in the color of pixels. That way it can then make an educated guess on how much to color and when to stop. You can then optimize this by putting in more than one input of the colors you want to change. This effect is really quite amazing. Scroll down and look at the gif video of the birthday party. JUST AMAZING.
Re:Unfuckingbelievable. (Score:4, Interesting)
Ruin them?
If you meant older color movies which have degraded, then I agree. This seems like a very useful technique for restoring the original vibrancy of colors to films whose media hasn't stood the test of time.
Been there, Read that (Score:3, Interesting)
Interactive Digital Photomontoge & Graph Cut.. (Score:5, Interesting)
Very cool stuff.
Pete
Re:Seems simple but... (Score:2, Interesting)
Not a new concept (Score:2, Interesting)
Maybe next time we can make a program that just guesses the colors and look at how interesting those come out!
Re:Photoshop (Score:5, Interesting)
application to motion video (Score:5, Interesting)
Re:Awesome! (Score:3, Interesting)
It happens already.
Re:Photoshop (Score:2, Interesting)
Create a magic wand tool that requires multiple clicks on the various regions of the image and you'd have pretty good results.
Amazing how Tech drizzles down. (Score:1, Interesting)
Colorizing examples. (Score:5, Interesting)
http://www.inference.phy.cam.ac.uk/cjb/ [cam.ac.uk]
nature (Score:5, Interesting)
" The technique works on the premise that 'neighboring pixels in space-time that have similar intensities should have similar colors"
Interestingly, the retina exploits that same property of natural scenes to compress images. This correlation between luminance and color is an opportunity to throw out redundant information. The eye multiplexes color and luminance information over a single channel, transmitting luminance while discarding color at high spatial frequencies and transmitting color while discarding luminance at low spacial frequencies. First reported by C.R. Ingling, color/luminance multiplexing is an inherent property of the linear color-opponent center-surround receptive field. For a good explication of the subject, see:
Vision Res. 1985;25(1):33-8."The spatiotemporal properties of the r-g X-cell channel."
Ingling CR Jr, Martinez-Uriegas E.
Abstract: Analysis of the simple-opponent r-g receptive field of the X-channel shows that it is tuned to both high and low temporal frequencies, high and low spatial frequencies, and that its spectral sensitivity is both chromatic and achromatic.
Applications for Art (Score:3, Interesting)
Go take a look at the "recoloring examples" in the coral cache. Also look at what a slashdotter did [slashdot.org] with the code. Photographers, designers and painters could do neat things with a filter like this in Gimp...
Dammit (Score:3, Interesting)
Which means that the current code is completely incompatible with Octave, as it depends on Matlab's implementation of imread() which returns image data as a three-dimensional matrix.
Going to see if I can get it to work easily, but there's a good chance I won't be able to.