Question: Need to auto crop text(signature)from an images(sample image:[Image1](https://i.stack.imgur.com/wGN1o.png) )and Need to change background color of cropped image. 
Need to achieve this using Imagemagick. 
Is it any possible way to achieve these ?
I am using version ImageMagick 7.0.7-28

[williamson image](https://i.stack.imgur.com/wMZdw.jpg)
[example image](https://i.stack.imgur.com/Xm8jk.jpg)

Answer: 
if you are using anaconda:

```
$ conda install pyqt

```

tnx for:

<https://stackoverflow.com/a/56544875/13510675>
I had the same issue and solved it uninstalling the *libqt5x11extras5l* library:

```
sudo apt-get remove libqt5x11extras5l

```