Update app.py

app.py

@@ -178,7 +178,7 @@ def extrude_depth_3d(
     #depth_image_new[depth_image_new < 0] = 0
     depth_image = median_filter(depth_image, size=filter_size)
     depth_image = emboss*(depth_image - np.min(depth_image)) / (np.max(depth_image) - np.min(depth_image))
-    depth_image = np.where(depth_image == emboss, depth_image + lift_height, depth_image)
+    depth_image = np.where(depth_image != emboss, depth_image + lift_height, depth_image)
     Image.fromarray((depth_image * 255).astype(np.uint8)).convert("L").save(path_out_base+".png")
     rgb_image = np.array(
         Image.open(path_rgb).convert("RGB").resize((w, h), Image.Resampling.LANCZOS)
@@ -476,7 +476,7 @@ def process_image_and_generate_stl(image_input, depth_near, depth_far, thickness
         vertex_colors=True,
         scene_lights=True,
         prepare_for_3d_printing=True,
-        lift_height=lift
+        lift_height=-lift
     )
 
     return stl_path # Return the path to the generated STL file