View allAll Photos Tagged imageprocessing
This image was created with GlitchSort, but perhaps is more a cross between an image processing effect and a visualization than a glitch. I performed a statistical FFT on each channel (RGB) at different scales to isolate low frequency detail—effectively creating transparent monochrome blocks at each scale. Then I applied a statistical FFT to the brightness channel to enhance high frequency detail, resulting in a very contrasty image that also revealed horizontal and vertical alignment of color areas, roughly corresponding to brushstroke direction. Finally, I applied the denoise filter, that replaces 3x3 blocks of pixels with the median value of the block, several times over. This is the result. You can see the original here.
This is a little tribute to a beautiful woman and a beautiful and creative sight. Inspired by this photo then coupled with this one.
Various techniques: FFT, channel-swapping, interrupted sorting, compositing with a mask derived from JPEG artifacts and color quantization.
Mosaic made with ACS and WFPC2 data
www.robgendlerastropics.com/NGC660-HST-Gendler.html
Robert Gendler
email: robgendler@att.net
Website: www.robgendlerastropics.com
Experimenting with colour versions of the classic image processing technique of the Hough transform.
See more details and examples here:
www.cutsquash.com/2014/02/colour-hough-transform/
Code available here:
WFC3 Data
www.robgendlerastropics.com/M57-HST-Gendler.html
Robert Gendler
email: robgendler@att.net
Website: www.robgendlerastropics.com
Mosaic made with ACS data
www.robgendlerastropics.com/NGC3190-HST-Gendler.html
Robert Gendler
email: robgendler@att.net
Website: www.robgendlerastropics.com
A median filter, where the center pixel of a 3x3 block is replaced with the median value in the block, can be made to behave as a cellular automaton. When presented with the appropriate sort of input, it will propagate artifacts with each application until it reaches an equilibrium state. This image (originally a vulture in a blue sky) was generated with interrupted sorting + color shifting on alternating lines of pixels, followed by many applications of the median filter.
An apple label on a frozen rear window of a SMART photographed in Heilbronn / Germany after a few steps of image processing with Aperture Version 2.1.2.
It's an attitude towards life to drive a SMART, use a MAC and to shoot with a CANON DSLR.
Created with GlitchSort, using a FFT as a low pass filter on each channel (RGB) separately at different scales, then quantizing to 4-bit color.
Taking a break from tech work to do a little photo-play. Made by blurring the original image, differencing it from the original, and boosting the response curve.
Here's the original.
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Version 1.2 of Percolator, Full of Stars, Stirred (color of kalamata olives)
Pericles, son of Xanthippus, Athenian
Museo Pio-Clementino, Muses Hall
© Marie-Lan Nguyen / Wikimedia Commons
Astronaut Gene Cernan on Apollo 17 mission. upload.wikimedia.org/wikipedia/commons/2/2f/Apollo_17_Cer...
Five Frame Mosaic made with ACS data
www.robgendlerastropics.com/NGC253-HST-Gendler.html
Robert Gendler
email: robgendler@att.net
Website: www.robgendlerastropics.com
Color quantization, JPEG degradation and channel-swapping in interrupted pixel sorting run on blocks of zigzag-scanned arrays produced this result. It amuses me that the quantization algorithms tend to emphasize edges, including facial features and other details, and so most of the glitching happens in faces and other transitions. Clothing, especially uniform gray suits, presents little detail, and so gets little glitching. Psychedelic swirls around legislators—what can it mean?
I don't recall seeing this by eye, yet it was clearly visible on the viewing screen of the Nikon Coolpix S6300 camera. And here it is on Flickr...;))
Earthshine is seen illuminating our not quite new moon this last week. My DSLR camera is in the shop for repairs. The eensy weensy tiny little pocketable cameraeeny I have started carrying around was handheld, and the image is highly cropped, so there is image smear, I fear.
I did some image processing using iPhoto which is not a very capable tool for this sort of thing.
I hope to use these images to teach myself Adobe Lightyear...;))
If you know of any good tutorials for this in Lightyear or Photoshop, I will be grateful!!
DSCN0332 - Version 5