fix: handle edits when creating face

server/src/services/person.service.ts

@@ -44,6 +44,7 @@ import { getDimensions } from 'src/utils/asset.util';
 import { ImmichFileResponse } from 'src/utils/file';
 import { mimeTypes } from 'src/utils/mime-types';
 import { isFacialRecognitionEnabled } from 'src/utils/misc';
+import { Point, transformPoints } from 'src/utils/transform';
 
 @Injectable()
 export class PersonService extends BaseService {
@@ -634,15 +635,50 @@ export class PersonService extends BaseService {
       this.requireAccess({ auth, permission: Permission.PersonRead, ids: [dto.personId] }),
     ]);
 
+    const asset = await this.assetRepository.getById(dto.assetId, { edits: true, exifInfo: true });
+    if (!asset) {
+      throw new NotFoundException('Asset not found');
+    }
+
+    const edits = asset.edits || [];
+
+    let p1: Point = { x: dto.x, y: dto.y };
+    let p2: Point = { x: dto.x + dto.width, y: dto.y + dto.height };
+
+    // the coordinates received from the client are based on the edited preview image
+    // we need to convert them to the coordinate space of the original unedited image
+    if (edits.length > 0) {
+      if (!asset.width || !asset.height || !asset.exifInfo?.exifImageWidth || !asset.exifInfo?.exifImageHeight) {
+        throw new BadRequestException('Asset does not have valid dimensions');
+      }
+
+      // convert from preview to full dimensions
+      const scaleFactor = asset.width / dto.imageWidth;
+      p1 = { x: p1.x * scaleFactor, y: p1.y * scaleFactor };
+      p2 = { x: p2.x * scaleFactor, y: p2.y * scaleFactor };
+
+      const {
+        points: [invertedP1, invertedP2],
+      } = transformPoints([p1, p2], edits, { width: asset.width, height: asset.height }, { inverse: true });
+
+      // make sure p1 is top-left and p2 is bottom-right
+      p1 = { x: Math.min(invertedP1.x, invertedP2.x), y: Math.min(invertedP1.y, invertedP2.y) };
+      p2 = { x: Math.max(invertedP1.x, invertedP2.x), y: Math.max(invertedP1.y, invertedP2.y) };
+
+      // now coordinates are in original image space
+      dto.imageHeight = asset.exifInfo.exifImageHeight;
+      dto.imageWidth = asset.exifInfo.exifImageWidth;
+    }
+
     await this.personRepository.createAssetFace({
       personId: dto.personId,
       assetId: dto.assetId,
       imageHeight: dto.imageHeight,
       imageWidth: dto.imageWidth,
-      boundingBoxX1: dto.x,
-      boundingBoxX2: dto.x + dto.width,
-      boundingBoxY1: dto.y,
-      boundingBoxY2: dto.y + dto.height,
+      boundingBoxX1: Math.round(p1.x),
+      boundingBoxX2: Math.round(p2.x),
+      boundingBoxY1: Math.round(p1.y),
+      boundingBoxY2: Math.round(p2.y),
       sourceType: SourceType.Manual,
     });
   }

server/src/utils/transform.ts

@@ -61,7 +61,7 @@ export const createAffineMatrix = (
   );
 };
 
-type Point = { x: number; y: number };
+export type Point = { x: number; y: number };
 
 type TransformState = {
   points: Point[];
@@ -73,29 +73,33 @@ type TransformState = {
  * Transforms an array of points through a series of edit operations (crop, rotate, mirror).
  * Points should be in absolute pixel coordinates relative to the starting dimensions.
  */
-const transformPoints = (
+export const transformPoints = (
   points: Point[],
   edits: AssetEditActionItem[],
   startingDimensions: ImageDimensions,
+  { inverse = false } = {},
 ): TransformState => {
   let currentWidth = startingDimensions.width;
   let currentHeight = startingDimensions.height;
   let transformedPoints = [...points];
 
-  // Handle crop first
-  const crop = edits.find((edit) => edit.action === 'crop');
-  if (crop) {
-    const { x: cropX, y: cropY, width: cropWidth, height: cropHeight } = crop.parameters;
-    transformedPoints = transformedPoints.map((p) => ({
-      x: p.x - cropX,
-      y: p.y - cropY,
-    }));
-    currentWidth = cropWidth;
-    currentHeight = cropHeight;
+  // Handle crop first if not inverting
+  if (!inverse) {
+    const crop = edits.find((edit) => edit.action === 'crop');
+    if (crop) {
+      const { x: cropX, y: cropY, width: cropWidth, height: cropHeight } = crop.parameters;
+      transformedPoints = transformedPoints.map((p) => ({
+        x: p.x - cropX,
+        y: p.y - cropY,
+      }));
+      currentWidth = cropWidth;
+      currentHeight = cropHeight;
+    }
   }
 
   // Apply rotate and mirror transforms
-  for (const edit of edits) {
+  const editSequence = inverse ? edits.toReversed() : edits;
+  for (const edit of editSequence) {
     let matrix: Matrix = identity();
     if (edit.action === 'rotate') {
       const angleDegrees = edit.parameters.angle;
@@ -105,7 +109,7 @@ const transformPoints = (
 
       matrix = compose(
         translate(newWidth / 2, newHeight / 2),
-        rotate(angleRadians),
+        rotate(inverse ? -angleRadians : angleRadians),
         translate(-currentWidth / 2, -currentHeight / 2),
       );
 
@@ -125,6 +129,18 @@ const transformPoints = (
     transformedPoints = transformedPoints.map((p) => applyToPoint(matrix, p));
   }
 
+  // Handle crop last if inverting
+  if (inverse) {
+    const crop = edits.find((edit) => edit.action === 'crop');
+    if (crop) {
+      const { x: cropX, y: cropY } = crop.parameters;
+      transformedPoints = transformedPoints.map((p) => ({
+        x: p.x + cropX,
+        y: p.y + cropY,
+      }));
+    }
+  }
+
   return {
     points: transformedPoints,
     currentWidth,