Update app.py

app.py

@@ -30,8 +30,6 @@ def fourier_transform_drawing(input_image, frames, coefficients):
     verts = [tuple(coord) for coord in contours[largest_contour_idx].squeeze()]
 
     xs, ys = zip(*verts)
-    #xs = np.asarray(xs) - np.mean(xs)
-    #ys = - np.asarray(ys) + np.mean(ys)
 
     # calculate the range of xs and ys
     x_range = np.max(xs) - np.min(xs)
@@ -44,8 +42,8 @@ def fourier_transform_drawing(input_image, frames, coefficients):
     
     # apply scaling
     # ys needs to be flipped vertically
-    xs = (xs - np.mean(xs)) * scale_factor_x
-    ys = (-ys + np.mean(ys)) * scale_factor_y
+    xs = (np.asarray(xs) - np.mean(xs)) * scale_factor_x
+    ys = (-np.asarray(ys) + np.mean(ys)) * scale_factor_y
 
     t_list = np.linspace(0, tau, len(xs))
 
@@ -119,7 +117,8 @@ interface = gr.Interface(
     outputs=gr.Video(),
     title="Fourier Transform Drawing",
     description="Upload an image and generate a Fourier Transform drawing animation."
+    examples=[["Fourier2.jpg", 100, 25]]
 )
 
 if __name__ == "__main__":
-    interface.launch()
+    interface.launch(cache_examples=True)