fix random_erasing bug (#1161)

ppcls/data/preprocess/ops/random_erasing.py

@@ -42,9 +42,9 @@ class RandomErasing(object):
             h = int(round(math.sqrt(target_area * aspect_ratio)))
             w = int(round(math.sqrt(target_area / aspect_ratio)))
 
-            if w < img.shape[2] and h < img.shape[1]:
-                x1 = random.randint(0, img.shape[1] - h)
-                y1 = random.randint(0, img.shape[2] - w)
+            if w < img.shape[1] and h < img.shape[0]:
+                x1 = random.randint(0, img.shape[0] - h)
+                y1 = random.randint(0, img.shape[1] - w)
                 if img.shape[0] == 3:
                     img[x1:x1 + h, y1:y1 + w, 0] = self.mean[0]
                     img[x1:x1 + h, y1:y1 + w, 1] = self.mean[1]