In 140px resolution show the output image with and without NTSC fringing

convert.py

@@ -14,7 +14,6 @@ import screen as screen_py
 
 # TODO:
 # - support alternate palettes properly
-# - include fringing in 140px output
 # - compare to bmp2dhr and a2bestpix
 # - support LR/DLR
 # - support HGR
@@ -72,15 +71,26 @@ def main():
     output_4bit, output_rgb = dither_pyx.dither_image(
         screen, resized, dither, lookahead)
     print(time.time() - start)
-    screen.pack(output_4bit)
 
+    if args.resolution == 140:
+        # Show un-fringed 140px output image
+        out_image = Image.fromarray(image_py.linear_to_srgb(output_rgb).astype(
+            np.uint8))
+        if args.show_output:
+            image_py.resize(out_image, 560, 384, srgb_output=True).show()
+
+    bitmap = screen.pack(output_4bit)
+    output_rgb = screen.bitmap_to_image_rgb(bitmap)
+
+    # Show output image
     out_image = Image.fromarray(image_py.linear_to_srgb(output_rgb).astype(
         np.uint8))
-    outfile = os.path.join(os.path.splitext(args.output)[0] + ".png")
-    out_image.save(outfile, "PNG")
     if args.show_output:
         image_py.resize(out_image, 560, 384, srgb_output=True).show()
 
+    outfile = os.path.join(os.path.splitext(args.output)[0] + ".png")
+    out_image.save(outfile, "PNG")
+
     with open(args.output, "wb") as f:
         f.write(bytes(screen.main))
         f.write(bytes(screen.aux))

screen.py

@@ -50,6 +50,18 @@ class Screen:
             self.aux[addr:addr + 40] = aux_col[y, :]
             self.main[addr:addr + 40] = main_col[y, :]
 
+        return bitmap
+
+    def bitmap_to_image_rgb(self, bitmap: np.ndarray) -> np.ndarray:
+        image_rgb = np.empty((192, 560, 3), dtype=np.uint8)
+        for y in range(self.Y_RES):
+            pixel = [False, False, False, False]
+            for x in range(560):
+                pixel[x % 4] = bitmap[y, x]
+                dots = self.palette.DOTS_TO_4BIT[tuple(pixel)]
+                image_rgb[y, x, :] = self.palette.RGB[dots]
+        return image_rgb
+
     def pixel_palette_options(self, last_pixel_4bit, x: int):
         raise NotImplementedError