From dba115e9d4ebe934a8c5d85f4ac989651b511079 Mon Sep 17 00:00:00 2001
From: Mark Otway <mark@otway.com>
Date: Wed, 13 Mar 2024 17:40:17 +0000
Subject: [PATCH 1/2] Use extra large thumbs for AI; they'll already be there
 and better result.

---
 .../Services/ImageRecognitionService.cs        | 16 ++++++++--------
 .../ObjectDetector.cs                          | 18 ++++++++++--------
 2 files changed, 18 insertions(+), 16 deletions(-)

diff --git a/Damselfly.Core/Services/ImageRecognitionService.cs b/Damselfly.Core/Services/ImageRecognitionService.cs
index b5b33927..543bea07 100644
--- a/Damselfly.Core/Services/ImageRecognitionService.cs
+++ b/Damselfly.Core/Services/ImageRecognitionService.cs
@@ -409,24 +409,24 @@ private async Task DetectObjects(ImageMetaData metadata)
         
         try
         {
-            var thumbSize = ThumbSize.Large;
-            var medThumb = new FileInfo(_thumbService.GetThumbPath(fileName, thumbSize));
+            var thumbSize = ThumbSize.ExtraLarge;
+            var imgThumb = new FileInfo(_thumbService.GetThumbPath(fileName, thumbSize));
 
             // We need a large thumbnail to do AI processing. Ensure it's been created.
-            if( ! medThumb.Exists )
+            if( ! imgThumb.Exists )
             {
                 await _thumbService.CreateThumb(image.ImageId, thumbSize);
-                if( ! File.Exists( medThumb.FullName ) )
+                if( ! File.Exists( imgThumb.FullName ) )
                 {
                     // If we couldn't create the thumb, bail out.
                     throw new InvalidOperationException(
-                        $"Unable to run AI processing - {thumbSize} thumbnail doesn't exist: {medThumb}");
+                        $"Unable to run AI processing - {thumbSize} thumbnail doesn't exist: {imgThumb}");
                 }
             }
 
             var enableAIProcessing = _configService.GetBool(ConfigSettings.EnableAIProcessing, true);
     
-            MetaDataService.GetImageSize(medThumb.FullName, out var thumbWidth, out var thumbHeight);
+            MetaDataService.GetImageSize(imgThumb.FullName, out var thumbWidth, out var thumbHeight);
 
             var foundObjects = new List<ImageObject>();
             var foundFaces = new List<ImageObject>();
@@ -434,11 +434,11 @@ private async Task DetectObjects(ImageMetaData metadata)
             if ( enableAIProcessing )
                 Logging.Log($"Processing AI image detection for {fileName.Name}...");
 
-            if ( !File.Exists(medThumb.FullName) )
+            if ( !File.Exists(imgThumb.FullName) )
                 // The thumb isn't ready yet. 
                 return;
 
-            using var theImage = SixLabors.ImageSharp.Image.Load<Rgb24>(medThumb.FullName);
+            using var theImage = SixLabors.ImageSharp.Image.Load<Rgb24>(imgThumb.FullName);
 
             if ( _imageClassifier != null && enableAIProcessing )
             {
diff --git a/Damselfly.ML.ObjectDetection.ML/ObjectDetector.cs b/Damselfly.ML.ObjectDetection.ML/ObjectDetector.cs
index edaf116e..831fd70a 100644
--- a/Damselfly.ML.ObjectDetection.ML/ObjectDetector.cs
+++ b/Damselfly.ML.ObjectDetection.ML/ObjectDetector.cs
@@ -44,19 +44,21 @@ public Task<IList<ImageDetectResult>> DetectObjects(Image<Rgb24> image)
         {
             if( scorer != null )
             {
-
                 var watch = new Stopwatch( "DetectObjects" );
 
-                var predictions = scorer.Predict( image );
-
-                watch.Stop();
+                // There's a min of 640x640 for the model.
+                if( image.Width > 640 && image.Height > 640 )
+                {
+                    var predictions = scorer.Predict( image );
 
-                var objectsFound = predictions.Where( x => x.Score > predictionThreshold )
-                    .Select( x => MakeResult( x ) )
-                    .ToList();
+                    watch.Stop();
 
-                result = objectsFound;
+                    var objectsFound = predictions.Where( x => x.Score > predictionThreshold )
+                        .Select( x => MakeResult( x ) )
+                        .ToList();
 
+                    result = objectsFound;
+                }
             }
         }
         catch ( Exception ex )

From 6993664531a93ea3ae938361fe2f0c9188572857 Mon Sep 17 00:00:00 2001
From: Mark Otway <mark@otway.com>
Date: Thu, 14 Mar 2024 07:38:26 +0000
Subject: [PATCH 2/2] Update VERSION

---
 VERSION | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/VERSION b/VERSION
index 627a3f43..4d0dcda0 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.1.1
+4.1.2