How to convert image to sound in Python
Tags: python, datascience, machinelearning, computerscience
Published: 2020-10-01 17:04:31

Hello guys,

In this tutorial, I will guide to building a Python program capable of converting an image to sound.

Throughout the tutorial, we will learn concepts of **Optical character recognition (OCR)** and **Speech synthesis** and later combining them to create a single working program.

### Project Requirements
- [Python Imaging Libary (Pillow)](https://pypi.org/project/Pillow/)
- [gTTS (Google text to speech)](https://pypi.org/project/gTTS/)
- [Python-tesseract (OCR Tool)](https://pypi.org/project/pytesseract/)

#### Installation
```bash
$ pip install Pillow
$ pip install gTTS
$ pip install pytesseract
```

Also in order **pytesseract** to work you have to install  Google’s Tesseract-OCR Engine on your machine.

To install Tesseract Engine, [CLICK HERE](https://tesseract-ocr.github.io/tessdoc/Home.html) to get full instruction on installation with respect to your operating system


Now after Everything is installed, let’s start building our program

#### Project Folder
On your project folder, you should have a sample image containing text on it which we could use to test our program

```bash
.
├── app.py
└── image.jpg

0 directories, 2 files 
```


Our project will be divided into two main parts
- Converting the image to text(Optical character Recognition)
- Converting Generated Text to speech (Speech Synthesis)

### Converting Image to Text
At this stage, we use Python Library  **pytesseract** to perform Optical character recognition which can be done in only one line of code.


But just  before we  begin to perform Optical Character recognition  on our image, we need a way to load the image to the required format, 

On this, we gonna use the Pillow library, Let's see how to convert image to text using pytesseract and pillow as shown in the example 

#### Example of Usage

```python
>>> from PIL import Image
>>> from pytesseract import image_to_string
>>> text = image_to_string(Image.open('image.jpg'))
'JOBS FILL\nYﬂUR POCKET.\nADVENTURES\nFILL YOUR\nLIFE.'
```


That’s how you can easily perform OCR in just 1 line of code, now let’s go see how can we convert it to speech using **gTTS**


### Converting Generated Text to speech
There various ways you convert to speech to text in Python, in case you wanna review them all you can [CLICK HERE](https://kalebujordan.com/speech-synthesis-in-python/)

In this tutorial, We are going to use google text to speech to convert our decoded text into sound.

### gTTS

The Syntax to performing text to speech is very simple you can also do it just one line of code as shown in the example below

```python
>>> from gtts import gTTS
>>> gTTS('Coding is awesome trust me').save('sound.mp3')
```


#### Final program

I made the below simple program using the knowledge we just learned above with the addition of a cleaner function to remove \n in a generated text to make it easily convertible to sound.

```python
from PIL import Image
from gtts import gTTS
from pytesseract import image_to_string
clean = lambda text : ' '.join(text.split('\n'))
to_text = lambda image: clean(image_to_string(Image.open(image)))
to_sound = lambda text: gTTS(text, lang='en').save('gene.mp3')
image_to_sound  = lambda image: to_sound(to_text(image))
image_to_sound('image.jpg')
input()
```

When you run the above code, it will open our sample image, perform optical character recognition, clean generated text by removing \n, convert into sound by using **gTTS**

In case you find it interesting, don't be shy share it with your fellow friends on twitter and other social media.

The [Original Article](https://kalebujordan.dev/convert-an-image-text-sound/) can be found on [kalebujordan.dev](https://kalebujordan.dev/convert-an-image-text-sound/)

{% github https://github.com/Kalebu/image-to-sound-python- %}