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08/21/2006 10:45:17 PM · #1 |
I have recently purchased a new camera, a Nikon D50. I have been very happy with it so far. The one problem that I am encountering is when I resize an image. I was preparing to enter a challenge and was reducing the size of my image to the 640 pixels. When I do this the image gets very pixilated, especially between 2 distinct colours.
Does any body have any advice or suggestions as to how I could correct this? |
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08/21/2006 10:47:03 PM · #2 |
Try this. Instead of resizing in one big step, try doing so in a series of smaller steps. For example. 2048px to 1500 to 1000 to 640 each on its own step. That might help
Also, can you post an example without revealing your entry?
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08/21/2006 10:47:57 PM · #3 |
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08/21/2006 10:48:04 PM · #4 |
Pixelation is normally noticed when you enlarge a picture (you see pixels instead of sharp lines). Reducing it is more likely to make it appear fuzzy or out of focus as the important pixels are removed.
With that thought in mind ... did you perhaps reduce the size and then ENLARGE it (beyond 100%) to fill your screen? If so, then yes, the reduced picture will look pixelated beyond 100%. Drop it back down to 100% and it should look fine.
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08/22/2006 12:25:59 AM · #5 |
PS can pixelate high-detail shots if done in Bucubic Sharper.
Sometimes Bicubic or Bicubic Smoother will do a better job if there is a lot of detail. |
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08/22/2006 04:56:17 PM · #6 |
| The pixilization seems to only be happening to certain images that have a large contrast in colour. I don have a lot of time at the moment, but will submit a photo to this weeks challenge and see if people also notice what I do. The images I am working with are jpegs. 3008 x 2000 pixels, and I am reducing them to the largest side being 640. Thanks for the help, and if I am still having trouble with this after the challenge, I will post the image to see if someone can figure it out. Thanx. |
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08/22/2006 05:23:53 PM · #7 |
Originally posted by oneredstar:
The pixilization seems to only be happening to certain images that have a large contrast in colour. I don have a lot of time at the moment, but will submit a photo to this weeks challenge and see if people also notice what I do. The images I am working with are jpegs. 3008 x 2000 pixels, and I am reducing them to the largest side being 640. Thanks for the help, and if I am still having trouble with this after the challenge, I will post the image to see if someone can figure it out. Thanx. |
Did you try out my technique posted above (several steps as opposed to one resize)? That may take care of it.
Message edited by author 2006-08-22 17:24:13.
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08/22/2006 05:32:10 PM · #8 |
For clarification, I assume that the pixelization you see on reducing the size is associated with edges and fine detail? An example would be a slightly jagged appearance of angled lines or edges.
This can be partly avoided by the stepped reduction technique posted previously. It is, to some degree a factof life when yoiu reduce size this much, though. Detail at the resolution limit of the reduced size photo is "undersampled" and if the photo is very sharp, it's bound ot look blocky, or "pixelated." Angled edges are also going to have at least some jaggedness. |
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08/22/2006 05:38:12 PM · #9 |
I'm like DWTERRY...
When I first joined DPC and had to reduce to 640 I encountered a strange problem....pixels showing up!
Seems I was resizing to 640 and then pressing the "fit screen" in Photoshop...guess what...to fit screen it was now showing at over 120% and I was getting pixels.
I'm not sure if that is what you're doing. Try looking at your resized photo by pressing the "actual Pixels" tab and see if you have pixelization...
Kenskid |
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