Run imageMagick command with Nodejs

Question

I am trying to improve the quality of a scanned PDF to proceed to OCR. I found the command textcleaner that uses ImageMagick. So how can I include this :

textcleaner -g -e normalize -f 30 -o 12 -s 2 original.jpg output.jpg

in my Nodejs code ?

Is exec maybe something for you nodejs.org/api/…

Victor Perez
– Victor Perez

2018-07-11 09:36:42 +00:00
Commented Jul 11, 2018 at 9:36 — Victor Perez
– Victor Perez, Commented Jul 11, 2018 at 9:36

Constantin Guidon · Accepted Answer · 2018-07-11 09:56:37Z

1

you can use exec:

exec(`textcleaner -g -e normalize -f 30 -o 12 -s 2 ${inputName} ${outputName}`);

or use a child process

const { spawn } = require('child_process');
const textcleaner = spawn('textcleaner', ['-g', '-e', 'normalize', '-f 30', '-o 12', '-s 2', inputName, outputName]);

textcleaner.stdout.on('data', (data) => {
  console.log(`stdout: ${data}`);
});

edited Jul 11, 2018 at 9:56

answered Jul 11, 2018 at 9:51

Constantin Guidon

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2 Comments

Asma_Kh Over a year ago

First of all thank u but when i try your second code i get this error : Error: spawn textcleaner ENOENT . where is the problem in spawn or textcleaner ?

Constantin Guidon Over a year ago

hi, seems your pass an invalid file path, change inputName

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