add manual Tile Processor

zoom on video on pause (temp image)
2026-04-23 00:16:30 +00:00 · 2025-07-28 12:39:52 +03:00
parent fefd054ea0
commit fc6e5db795
34 changed files with 716 additions and 209 deletions
@@ -0,0 +1,82 @@
+using System.Windows;
+using System.Windows.Media.Imaging;
+using Azaion.Common.DTO;
+
+namespace Azaion.Common.Services;
+
+public class TileResult
+{
+    public CanvasLabel Tile { get; set; }
+    public List<CanvasLabel> Detections { get; set; }
+
+    public TileResult(CanvasLabel tile, List<CanvasLabel> detections)
+    {
+        Tile = tile;
+        Detections = detections;
+    }
+}
+
+public static class TileProcessor
+{
+    private const int MaxTileWidth = 1280;
+    private const int MaxTileHeight = 1280;
+    private const int Border = 10;
+
+    public static List<TileResult> Split(Size originalSize, List<CanvasLabel> detections, CancellationToken cancellationToken)
+    {
+        var results = new List<TileResult>();
+        var processingDetectionList = new List<CanvasLabel>(detections);
+        
+        while (processingDetectionList.Count > 0 && !cancellationToken.IsCancellationRequested)
+        {
+            var topMostDetection = processingDetectionList
+                .OrderBy(d => d.Y)
+                .First();
+            
+            var result = GetDetectionsInTile(originalSize, topMostDetection, processingDetectionList);
+            processingDetectionList.RemoveAll(x => result.Detections.Contains(x));
+            results.Add(result);
+        }
+        return results;
+    }
+    
+    private static TileResult GetDetectionsInTile(Size originalSize, CanvasLabel startDet, List<CanvasLabel> allDetections)
+    {
+        var tile = new CanvasLabel(
+            left: Math.Max(startDet.X - Border, 0),
+            right: Math.Min(startDet.Right + Border, originalSize.Width),
+            top: Math.Max(startDet.Y - Border, 0),
+            bottom: Math.Min(startDet.Bottom + Border, originalSize.Height));
+        var selectedDetections = new List<CanvasLabel>{startDet};
+        
+        foreach (var det in allDetections)
+        {
+            if (det == startDet) 
+                continue;
+            
+            var commonTile = new CanvasLabel(
+                left: Math.Max(Math.Min(tile.X, det.X) - Border, 0),
+                right: Math.Min(Math.Max(tile.Right, det.Right) + Border, originalSize.Width),
+                top: Math.Max(Math.Min(tile.Y, det.Y) - Border, 0),
+                bottom: Math.Min(Math.Max(tile.Bottom, det.Bottom) + Border, originalSize.Height)
+            );
+
+            if (commonTile.Width > MaxTileWidth || commonTile.Height > MaxTileHeight) 
+                continue;
+            
+            tile = commonTile;
+            selectedDetections.Add(det);
+        }
+
+        //normalization, width and height should be at least half of 1280px
+        tile.Width = Math.Max(tile.Width, MaxTileWidth / 2.0);
+        tile.Height = Math.Max(tile.Height, MaxTileHeight / 2.0);
+        
+        //boundaries check after normalization
+        tile.Right = Math.Min(tile.Right, originalSize.Width);
+        tile.Bottom = Math.Min(tile.Bottom, originalSize.Height);
+        
+        return new TileResult(tile, selectedDetections);
+    }
+
+}