Resized image contains a a different layer on lower part

[vikash-agrawal-arimon]

Hi,

I am using beta 6 release Image Sharp and deploying on Azure App Functions. Image resizing is working but the lower part of the resized image contains a different layer it seems.
Below is my code to resize:

using SixLabors.ImageSharp;
using SixLabors.ImageSharp.Formats.Jpeg;
using SixLabors.ImageSharp.Formats.Png;
using SixLabors.ImageSharp.PixelFormats;
using SixLabors.ImageSharp.Processing;
using SixLabors.Primitives;

public static void Run(Stream myBlob, string name, ILogger log, Stream outputBlob)
{
    log.LogInformation($"C# Blob trigger function Processed blob\n Name:{name} \n Size: {myBlob.Length} Bytes");
    using (Image<Rgba32> image  = Image.Load(myBlob))
    {
                image.Mutate(x => x.Resize(300, 200));
                image.Save(outputBlob,new PngEncoder());
 
    }
}

Original Image:

Resized:

[JimBobSquarePants]

Duplicated of #890 please update to the latest build from MyGet

[vikash-agrawal-arimon]

No its not closed. I tried with dev builds mentioned in the post with the same version in dev and with current nightly build too. I am still getting the same error with JPG files. With png files its working fine.

[JimBobSquarePants]

Could you please clarify:

1. Does the issue occur when encoding or when decoding jpeg files?
2. Does the issue occur when you simply load/save the image without resizing
3. Does the issue occur in both 32 bit and 64 bit environments?
4. What framework are you targeting?

[sport-monkey]

Are you targeting Azure Functions version v1 or v2?

[fatihsokmen]

We've been having the same problem, anybody solved this or any workaround exits?

[JimBobSquarePants]

Version number, image?

[rrasho]

I am seeing this with azure functions V3 (3.0.13139.0). Resizing book covers from large jpgs to smaller png.

I do not see the issue when running locally on my Mac, or in my parallels install of windows 10.

What my image should look like (resized locally):

What it looks like resized by azure function:

[JimBobSquarePants]

You need to let us know the ImageSharp version. We can do nothing without it

[JimBobSquarePants]

Code samples also to replicate the issue.

[fatihsokmen]

Version number, image?

I used 1.0.0-beta0007. I have same issue as @rrasho has

As you can notice, bottom side is shifted slightly to the right. @JimBobSquarePants

[JimBobSquarePants]

Can you try the latest build from our MyGet package source?

[JimBobSquarePants]

Also try copying the input stream to a MemoryStream then resetting the position before using it to load the image.

[JimBobSquarePants]

@rrasho @fatihsokmen does the issue only happen when saving to png? Only when resizing? or does simply loading/saving a jpeg cause the issue?