From b4196f86bb6a4790bf697d03649f90555132a36e Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 18 Feb 2026 21:50:10 +0000
Subject: [PATCH 1/4] Initial plan


From 2a344a98c22aafc2bb346e4719922dea475af642 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 18 Feb 2026 22:03:21 +0000
Subject: [PATCH 2/4] Update SkiaSharp from 2.88.8 to 3.119.2 and fix breaking
 API changes

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
---
 eng/Versions.props                                  |  2 +-
 src/Microsoft.ML.ImageAnalytics/MLImage.cs          | 13 +++++--------
 .../Microsoft.ML.ImageAnalytics.csproj              |  2 ++
 3 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/eng/Versions.props b/eng/Versions.props
index fb2e1d31c6..1525ac693c 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -19,7 +19,7 @@
     <MicrosoftExtensionsObjectPoolVersion>9.0.4</MicrosoftExtensionsObjectPoolVersion>
     <MicrosoftExtensionsOptionsVersion>9.0.4</MicrosoftExtensionsOptionsVersion>
     <NuGetVersion>6.9.1</NuGetVersion>
-    <SkiaSharpVersion>2.88.8</SkiaSharpVersion>
+    <SkiaSharpVersion>3.119.2</SkiaSharpVersion>
     <SystemCodeDomVersion>9.0.4</SystemCodeDomVersion>
     <SystemCollectionsImmutableVersion>9.0.4</SystemCollectionsImmutableVersion>
     <SystemConfigurationConfigurationManagerVersion>9.0.4</SystemConfigurationConfigurationManagerVersion>
diff --git a/src/Microsoft.ML.ImageAnalytics/MLImage.cs b/src/Microsoft.ML.ImageAnalytics/MLImage.cs
index 4bb3a0571d..b8251e32b5 100644
--- a/src/Microsoft.ML.ImageAnalytics/MLImage.cs
+++ b/src/Microsoft.ML.ImageAnalytics/MLImage.cs
@@ -155,14 +155,14 @@ public byte[] GetBGRPixels
         /// <summary>
         /// Gets the image pixel data.
         /// </summary>
-        public ReadOnlySpan<byte> Pixels
+        public unsafe ReadOnlySpan<byte> Pixels
         {
             get
             {
                 ThrowInvalidOperationExceptionIfDisposed();
                 Debug.Assert(_image.Info.BytesPerPixel == 4);
 
-                return _image.GetPixelSpan();
+                return new ReadOnlySpan<byte>(_image.GetPixels().ToPointer(), _image.ByteCount);
             }
         }
 
@@ -305,7 +305,7 @@ internal MLImage CloneWithResizing(int width, int height, ImageResizeMode mode)
             return new MLImage(image);
         }
 
-        private SKBitmap ResizeFull(int width, int height) => _image.Resize(new SKSizeI(width, height), SKFilterQuality.None);
+        private SKBitmap ResizeFull(int width, int height) => _image.Resize(new SKSizeI(width, height), new SKSamplingOptions(SKFilterMode.Nearest));
 
         private SKBitmap ResizeWithPadding(int width, int height)
         {
@@ -334,9 +334,8 @@ private SKBitmap ResizeWithPadding(int width, int height)
             SKRect destRect = new SKRect(destX, destY, destX + destWidth, destY + destHeight);
 
             using SKCanvas canvas = new SKCanvas(destBitmap);
-            using SKPaint paint = new SKPaint() { FilterQuality = SKFilterQuality.High };
 
-            canvas.DrawBitmap(_image, srcRect, destRect, paint);
+            canvas.DrawBitmap(_image, srcRect, destRect);
 
             return destBitmap;
         }
@@ -391,9 +390,8 @@ private SKBitmap ResizeWithCrop(int width, int height, ImageResizeMode mode)
             SKRect destRect = new SKRect(destX, destY, destX + destWidth, destY + destHeight);
 
             using SKCanvas canvas = new SKCanvas(dst);
-            using SKPaint paint = new SKPaint() { FilterQuality = SKFilterQuality.High };
 
-            canvas.DrawBitmap(_image, srcRect, destRect, paint);
+            canvas.DrawBitmap(_image, srcRect, destRect);
 
             return dst;
         }
@@ -415,7 +413,6 @@ internal MLImage CloneWithGrayscale()
             using SKPaint paint = new SKPaint()
             {
                 ColorFilter = _grayscaleColorMatrix,
-                FilterQuality = SKFilterQuality.High
             };
 
             SKBitmap destBitmap = new SKBitmap(_image.Width, _image.Height, isOpaque: true);
diff --git a/src/Microsoft.ML.ImageAnalytics/Microsoft.ML.ImageAnalytics.csproj b/src/Microsoft.ML.ImageAnalytics/Microsoft.ML.ImageAnalytics.csproj
index 4f4213309b..434aa4c882 100644
--- a/src/Microsoft.ML.ImageAnalytics/Microsoft.ML.ImageAnalytics.csproj
+++ b/src/Microsoft.ML.ImageAnalytics/Microsoft.ML.ImageAnalytics.csproj
@@ -11,6 +11,8 @@
     <PackageReference Include="System.Buffers" />
     <PackageReference Include="System.Runtime.CompilerServices.Unsafe" />
 
+    <PackageReference Include="SkiaSharp" />
+
     <!-- SkiaSharp reference Windows, UWP, and MacOS native dependencies packages. No need to explicity reference it here. -->
     <PackageReference Include="SkiaSharp.NativeAssets.Linux.NoDependencies" />
   </ItemGroup>

From 0d13f3b8bd8f7dd7fbb6868ae139962783ec4bbc Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 18 Feb 2026 22:05:18 +0000
Subject: [PATCH 3/4] Use high-quality SKCubicResampler.Mitchell for resize
 operations

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
---
 src/Microsoft.ML.ImageAnalytics/MLImage.cs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Microsoft.ML.ImageAnalytics/MLImage.cs b/src/Microsoft.ML.ImageAnalytics/MLImage.cs
index b8251e32b5..b8337e3d20 100644
--- a/src/Microsoft.ML.ImageAnalytics/MLImage.cs
+++ b/src/Microsoft.ML.ImageAnalytics/MLImage.cs
@@ -334,8 +334,9 @@ private SKBitmap ResizeWithPadding(int width, int height)
             SKRect destRect = new SKRect(destX, destY, destX + destWidth, destY + destHeight);
 
             using SKCanvas canvas = new SKCanvas(destBitmap);
+            using SKImage image = SKImage.FromBitmap(_image);
 
-            canvas.DrawBitmap(_image, srcRect, destRect);
+            canvas.DrawImage(image, srcRect, destRect, new SKSamplingOptions(SKCubicResampler.Mitchell));
 
             return destBitmap;
         }
@@ -390,8 +391,9 @@ private SKBitmap ResizeWithCrop(int width, int height, ImageResizeMode mode)
             SKRect destRect = new SKRect(destX, destY, destX + destWidth, destY + destHeight);
 
             using SKCanvas canvas = new SKCanvas(dst);
+            using SKImage image = SKImage.FromBitmap(_image);
 
-            canvas.DrawBitmap(_image, srcRect, destRect);
+            canvas.DrawImage(image, srcRect, destRect, new SKSamplingOptions(SKCubicResampler.Mitchell));
 
             return dst;
         }

From 00d95ab29f5ac34202f29562dcc857147d2fd235 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Mon, 23 Feb 2026 03:21:47 +0000
Subject: [PATCH 4/4] Address review feedback: fix csproj comment and add pixel
 pointer validation

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
---
 src/Microsoft.ML.ImageAnalytics/MLImage.cs                  | 6 +++++-
 .../Microsoft.ML.ImageAnalytics.csproj                      | 2 +-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/Microsoft.ML.ImageAnalytics/MLImage.cs b/src/Microsoft.ML.ImageAnalytics/MLImage.cs
index b8337e3d20..15ab01439e 100644
--- a/src/Microsoft.ML.ImageAnalytics/MLImage.cs
+++ b/src/Microsoft.ML.ImageAnalytics/MLImage.cs
@@ -162,7 +162,11 @@ public unsafe ReadOnlySpan<byte> Pixels
                 ThrowInvalidOperationExceptionIfDisposed();
                 Debug.Assert(_image.Info.BytesPerPixel == 4);
 
-                return new ReadOnlySpan<byte>(_image.GetPixels().ToPointer(), _image.ByteCount);
+                var pixelsPtr = _image.GetPixels();
+                if (pixelsPtr == IntPtr.Zero || _image.ByteCount <= 0)
+                    throw new InvalidOperationException("Pixel data is unavailable.");
+
+                return new ReadOnlySpan<byte>(pixelsPtr.ToPointer(), _image.ByteCount);
             }
         }
 
diff --git a/src/Microsoft.ML.ImageAnalytics/Microsoft.ML.ImageAnalytics.csproj b/src/Microsoft.ML.ImageAnalytics/Microsoft.ML.ImageAnalytics.csproj
index 434aa4c882..158287c158 100644
--- a/src/Microsoft.ML.ImageAnalytics/Microsoft.ML.ImageAnalytics.csproj
+++ b/src/Microsoft.ML.ImageAnalytics/Microsoft.ML.ImageAnalytics.csproj
@@ -13,7 +13,7 @@
 
     <PackageReference Include="SkiaSharp" />
 
-    <!-- SkiaSharp reference Windows, UWP, and MacOS native dependencies packages. No need to explicity reference it here. -->
+    <!-- SkiaSharp already includes Windows, UWP, and macOS native dependency packages; only the Linux native assets package needs to be referenced explicitly here. -->
     <PackageReference Include="SkiaSharp.NativeAssets.Linux.NoDependencies" />
   </ItemGroup>