* Pixel row
* Pixel col
-Two functions additional functions
+The two additional functions
```
torch.ByteStorage svrt.compress(torch.ByteStorage x)
torch.ByteStorage svrt.uncompress(torch.ByteStorage x)
```
-provides a lossless compression scheme adapted to the ByteStorage of
+provide a lossless compression scheme adapted to the ByteStorage of
the vignette ByteTensor (i.e. expecting a lot of 255s, a few 0s, and
no other value).