: How to find quality of a downsample image and which is best algorithm to downscale? We are using an opensource application to process the images, It is using nearest neighbor, bilinear and bicubic

We are using an opensource application to process the images, It is using nearest neighbor, bilinear and bicubic algorithms to downsample the images.

In most of the scenarios the image are good, but when it comes to images film grain images, all the three algorithms are failing.

As it is a open source tool, we can edit the source code of the tool. but the problems are , "We don't know which algorithms are best for printable downsampling images" and "How to compare them".

Thanks,
Praveen Ravipati.

10.01% popularity Vote Up Vote Down

: Symbols as Logos Would it be illegal to use a symbol as your logo? For instance, could the ohm symbol be the logo for a yoga studio? Could the peace sign be a logo for a non profit organization?

@Ravi4787994

Posted in: #Logo

2 Comments

: What's the term of what I need to fix here - Umlaut dots missing at 80% zoom? In my font, the Umlaut character is broken when viewing at 80% zoom in Word. It displays like U but is in

@Ravi4787994

Posted in: #FontDesign #Typography

1 Comments

: Illustrator: How can I delete specific straight lines in a pattern automatically? I want to remove every other line in this pattern (image 1) automatically so I get a pattern like image 2 without

@Ravi4787994

Posted in: #AdobeIllustrator

0 Comments

: Fonts to be used on a catalogue Is it safe to use any font (like Futura/Circular/Univers) on a catalogue that is going to be used only in a digital format (like an ebook) and also that is

@Ravi4787994

Posted in: #AdobeIndesign #Ebook #Fonts #Typography

1 Comments

Login to post a comment!

1 Comments

Sorted by latest first Latest Oldest Best

@Samaraweera207

GIMP has a "Sinc (Lanczos 3)" interpolation method, which is excellent for downsampling. However if the original images are large, with lots of small details such as film grain, and you are downsampling much smaller, then there's not really much you can do. Details will be lost when resampling, no matter what you do. It's a fact of reality.

I suppose you could try adding a film grain effect again, after you have downsampled it.

How to compare them? Look at them side by side at 100% zoom.

Might I ask why you are downsampling the image? If it's for print, why do that?

10% popularity Vote Up Vote Down

Feed

: How to find quality of a downsample image and which is best algorithm to downscale? We are using an opensource application to process the images, It is using nearest neighbor, bilinear and bicubic

More posts by @Ravi4787994

: Symbols as Logos Would it be illegal to use a symbol as your logo? For instance, could the ohm symbol be the logo for a yoga studio? Could the peace sign be a logo for a non profit organization?

: What's the term of what I need to fix here - Umlaut dots missing at 80% zoom? In my font, the Umlaut character is broken when viewing at 80% zoom in Word. It displays like U but is in

: Illustrator: How can I delete specific straight lines in a pattern automatically? I want to remove every other line in this pattern (image 1) automatically so I get a pattern like image 2 without

: Fonts to be used on a catalogue Is it safe to use any font (like Futura/Circular/Univers) on a catalogue that is going to be used only in a digital format (like an ebook) and also that is

Login to post a comment!

1 Comments

Back to top | Use Dark Theme