remove noise from image text nodejs
2
how can i remove background noise and leave only the text?
Example image:
My code:
var Tesseract = require('tesseract.js');
var Jimp = require("jimp");
Jimp.read("12.png").then(function (image) {
image
.color([
{ apply: 'brighten', params: [20] }
])
.contrast(1)
.greyscale()
.write("img-opt.jpg");
})
.then(function() {
Tesseract.recognize('img-opt.jpg', {
tessedit_char_whitelist: 'AN%D%P'
})
.progress(function(message){console.log(message)})
.catch(function(err){console.error(err)})
.then(function(result){console.log(result.text)})
})
.catch(function (err) {
console.error(err);
});
And i got this result:
So, how can i can remove background noise?
Thanks!
node.js
asked Nov 1 '18 at 21:39
FunnyCheeseFunnyCheese
466
add a comment |
2
how can i remove background noise and leave only the text?
Example image:
My code:
var Tesseract = require('tesseract.js');
var Jimp = require("jimp");
Jimp.read("12.png").then(function (image) {
image
.color([
{ apply: 'brighten', params: [20] }
])
.contrast(1)
.greyscale()
.write("img-opt.jpg");
})
.then(function() {
Tesseract.recognize('img-opt.jpg', {
tessedit_char_whitelist: 'AN%D%P'
})
.progress(function(message){console.log(message)})
.catch(function(err){console.error(err)})
.then(function(result){console.log(result.text)})
})
.catch(function (err) {
console.error(err);
});
And i got this result:
So, how can i can remove background noise?
Thanks!
node.js
asked Nov 1 '18 at 21:39
FunnyCheeseFunnyCheese
466
add a comment |
2
2
2
2
how can i remove background noise and leave only the text?
Example image:
My code:
var Tesseract = require('tesseract.js');
var Jimp = require("jimp");
Jimp.read("12.png").then(function (image) {
image
.color([
{ apply: 'brighten', params: [20] }
])
.contrast(1)
.greyscale()
.write("img-opt.jpg");
})
.then(function() {
Tesseract.recognize('img-opt.jpg', {
tessedit_char_whitelist: 'AN%D%P'
})
.progress(function(message){console.log(message)})
.catch(function(err){console.error(err)})
.then(function(result){console.log(result.text)})
})
.catch(function (err) {
console.error(err);
});
And i got this result:
So, how can i can remove background noise?
Thanks!
node.js
asked Nov 1 '18 at 21:39
FunnyCheeseFunnyCheese
466
how can i remove background noise and leave only the text?
Example image:
My code:
var Tesseract = require('tesseract.js');
var Jimp = require("jimp");
Jimp.read("12.png").then(function (image) {
image
.color([
{ apply: 'brighten', params: [20] }
])
.contrast(1)
.greyscale()
.write("img-opt.jpg");
})
.then(function() {
Tesseract.recognize('img-opt.jpg', {
tessedit_char_whitelist: 'AN%D%P'
})
.progress(function(message){console.log(message)})
.catch(function(err){console.error(err)})
.then(function(result){console.log(result.text)})
})
.catch(function (err) {
console.error(err);
});
And i got this result:
So, how can i can remove background noise?
Thanks!
node.js
node.js
asked Nov 1 '18 at 21:39
FunnyCheeseFunnyCheese
466
asked Nov 1 '18 at 21:39
FunnyCheeseFunnyCheese
466
asked Nov 1 '18 at 21:39
FunnyCheeseFunnyCheese
466
asked Nov 1 '18 at 21:39
FunnyCheeseFunnyCheese
466
asked Nov 1 '18 at 21:39
FunnyCheeseFunnyCheese
466
466
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
1
I got better results by removing the brigthen transformation.
Also desaturate seems to work better than grayscale.
image
.color([{apply: 'desaturate', params: [90]}])
.contrast(1)
.write("img-opt.jpg");
You just need a little bit of trial and error.
answered Nov 13 '18 at 9:48
mihaimihai
23.7k74068
Omg! Thanks, that works good for me! Is there an option for the tesseract to set the number of characters in image (6), and the fact that all characters are the same size?
– FunnyCheese
Nov 14 '18 at 11:19
1
I am not familiar with tesseract, you could try asking another question
– mihai
Nov 14 '18 at 12:26
okey, thank you!
– FunnyCheese
Nov 14 '18 at 14:56
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
I got better results by removing the brigthen transformation.
Also desaturate seems to work better than grayscale.
image
.color([{apply: 'desaturate', params: [90]}])
.contrast(1)
.write("img-opt.jpg");
You just need a little bit of trial and error.
answered Nov 13 '18 at 9:48
mihaimihai
23.7k74068
Omg! Thanks, that works good for me! Is there an option for the tesseract to set the number of characters in image (6), and the fact that all characters are the same size?
– FunnyCheese
Nov 14 '18 at 11:19
1
I am not familiar with tesseract, you could try asking another question
– mihai
Nov 14 '18 at 12:26
okey, thank you!
– FunnyCheese
Nov 14 '18 at 14:56
add a comment |
1
I got better results by removing the brigthen transformation.
Also desaturate seems to work better than grayscale.
image
.color([{apply: 'desaturate', params: [90]}])
.contrast(1)
.write("img-opt.jpg");
You just need a little bit of trial and error.
answered Nov 13 '18 at 9:48
mihaimihai
23.7k74068
Omg! Thanks, that works good for me! Is there an option for the tesseract to set the number of characters in image (6), and the fact that all characters are the same size?
– FunnyCheese
Nov 14 '18 at 11:19
1
I am not familiar with tesseract, you could try asking another question
– mihai
Nov 14 '18 at 12:26
okey, thank you!
– FunnyCheese
Nov 14 '18 at 14:56
add a comment |
1
1
1
I got better results by removing the brigthen transformation.
Also desaturate seems to work better than grayscale.
image
.color([{apply: 'desaturate', params: [90]}])
.contrast(1)
.write("img-opt.jpg");
You just need a little bit of trial and error.
answered Nov 13 '18 at 9:48
mihaimihai
23.7k74068
I got better results by removing the brigthen transformation.
Also desaturate seems to work better than grayscale.
image
.color([{apply: 'desaturate', params: [90]}])
.contrast(1)
.write("img-opt.jpg");
You just need a little bit of trial and error.
answered Nov 13 '18 at 9:48
mihaimihai
23.7k74068
answered Nov 13 '18 at 9:48
mihaimihai
23.7k74068
answered Nov 13 '18 at 9:48
mihaimihai
23.7k74068
answered Nov 13 '18 at 9:48
mihaimihai
23.7k74068
23.7k74068
Omg! Thanks, that works good for me! Is there an option for the tesseract to set the number of characters in image (6), and the fact that all characters are the same size?
– FunnyCheese
Nov 14 '18 at 11:19
1
I am not familiar with tesseract, you could try asking another question
– mihai
Nov 14 '18 at 12:26
okey, thank you!
– FunnyCheese
Nov 14 '18 at 14:56
add a comment |
Omg! Thanks, that works good for me! Is there an option for the tesseract to set the number of characters in image (6), and the fact that all characters are the same size?
– FunnyCheese
Nov 14 '18 at 11:19
1
I am not familiar with tesseract, you could try asking another question
– mihai
Nov 14 '18 at 12:26
okey, thank you!
– FunnyCheese
Nov 14 '18 at 14:56
Omg! Thanks, that works good for me! Is there an option for the tesseract to set the number of characters in image (6), and the fact that all characters are the same size?
– FunnyCheese
Nov 14 '18 at 11:19
Omg! Thanks, that works good for me! Is there an option for the tesseract to set the number of characters in image (6), and the fact that all characters are the same size?
– FunnyCheese
Nov 14 '18 at 11:19
1
1
I am not familiar with tesseract, you could try asking another question
– mihai
Nov 14 '18 at 12:26
I am not familiar with tesseract, you could try asking another question
– mihai
Nov 14 '18 at 12:26
okey, thank you!
– FunnyCheese
Nov 14 '18 at 14:56
okey, thank you!
– FunnyCheese
Nov 14 '18 at 14:56
add a comment |
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