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Quality loss when reducing the dimensions of my image

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Quality loss when reducing the dimensions of my image qsdqsd 04 Jan 17:39
  Quality loss when reducing the dimensions of my image Steve Kinney 04 Jan 20:27
   Quality loss when reducing the dimensions of my image qsdqsd 08 Jan 13:41
2018-01-04 17:39:35 UTC (9 months ago)
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Quality loss when reducing the dimensions of my image

Hi everybody,

I was wondering if it was normal to see a loss of quality after reducing an image with Image --> scale image or with the (Shift+T) tool. I can see more blur. A less define edge.

I thought a quality loss never happened when reducing an image but when increasing it size..

Steve Kinney
2018-01-04 20:27:25 UTC (9 months ago)

Quality loss when reducing the dimensions of my image

On 01/04/2018 12:39 PM, qsdqsd wrote:

Hi everybody,

I was wondering if it was normal to see a loss of quality after reducing an image with Image --> scale image or with the (Shift+T) tool. I can see more blur. A less define edge.

I thought a quality loss never happened when reducing an image but when increasing it size..

When increasing the size of an image (in pixels), the averages adjacent pixels together as necessary to spread the same pattern across a larger number of pixels. This does produce a visible blurring effect where the original had sharp edges.

When scaling down, the pixels along high contrast edges in an image are again averaged together, but because the visible size of the affected areas is decreased the loss of resolution is not as visible. But if you "zoom in" and look at the image at the same size (in cm on screen) as it was before scaling down, the loss of resolution will be visible.

:o)

2018-01-08 13:41:19 UTC (9 months ago)
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Quality loss when reducing the dimensions of my image

Thank you for such a great explanation :)