Gradient creates lines

[Niksap]

Hi,

I am working on a picture that is supposed to overlap with another one with gradient in trasparency mode. I have noticed that the gradient creates some lines (more visible on darker parts of the picure than on lighter), while the Fade Edges doesn't (see picture). I cannot use Fade Edges because I want to fade just the bottom side. Why does this happen with Gradient ? unprecise algorithm ? could you please suggest another Gradient plugin that works better than the standard one ? thanks Nik

[NinthDesertDude]

I don't see any lines only on the left side. I looked at it both unzoomed and at 6400% zoom in paint.net.

There is a faint semicircular line at the seam of the pants in BOTH sides of the picture, more visible on the right side, which is what it seems the arrow is pointing at. If you don't see it on the right-hand side, check your monitor's color profile settings and make sure the brightness is up. It's very much there.

[Niksap]

2 hours ago, NinthDesertDude said:

I don't see any lines only on the left side. I looked at it both unzoomed and at 6400% zoom in paint.net.

There is a faint semicircular line at the seam of the pants in BOTH sides of the picture, more visible on the right side, which is what it seems the arrow is pointing at. If you don't see it on the right-hand side, check your monitor's color profile settings and make sure the brightness is up. It's very much there.

Thanks for your comment. I thought about the monitor quality as well, but being two different pictures shown on the same monitor if there was no difference they should look the same. I have applied an Octree algorithm in order to see if I could highlight the differences. As you can see the picture now shows a difference in terms of "lines" height. On the left they are wider than on the right. In normal view the lines on the left can be perceived (very light though), not on the right (this is why I wrote NO LINES). I don't know what to think .... thanks

 

[Pixey]

Can you let us have the original picture @Niksap so that we may try it ourselves to see the result.

 

Also, you can use Fade Edge on the bottom of the picture, if you 'select' the bottom with Rectangle Select:

 

[Rick Brewster]

I seriously can't see what you're trying to point out. There's obviously a crease in the pants, that's all I see. If it's something other than that then it must be something with your monitor, color calibration, or perhaps just simply your brightness/contrast settings.

[Niksap]

11 hours ago, Pixey said:

Can you let us have the original picture @Niksap so that we may try it ourselves to see the result.

 

Also, you can use Fade Edge on the bottom of the picture, if you 'select' the bottom with Rectangle Select:

 

Please find the original image. Lines (and waves sometimes) are more visible in darker areas. Thanks for your suggestion, it would be great if the function itself could be upgraded adding checkboxes to select the side(s) to apply the fading.

 

[Pixey]

I guess this requires a bit of trial and error, you have to pull at both of the nubs to soften the blur: