Tesseract.js แปลงข้อความในรูปภาพเป็นข้อความ text

17 ต.ค. 2016 , 4,746 Views , หมวดหมู่ jQuery,JavaScript,Ajax ทุกหมวดหมู่ โค๊ดดิ้ง ,

Tesseract.js is a javascript library that gets words in almost any language out of images.

สามารถแปลงข้อความในรูปภาพเป็นข้อความ text ได้ รองรับกว่า 60 ภาษา (languange)

โค๊ดตัวอย่างการใช้งาน

<script src="dist/tesseract.js"></script>
<script>
function progressUpdate(packet){
	var log = document.getElementById('log');
	if(log.firstChild && log.firstChild.status === packet.status){
		if('progress' in packet){
			var progress = log.firstChild.querySelector('progress')
			progress.value = packet.progress
		}
	}else{
		var line = document.createElement('div');
		line.status = packet.status;
		var status = document.createElement('div')
		status.className = 'status'
		status.appendChild(document.createTextNode(packet.status))
		line.appendChild(status)
		if('progress' in packet){
			var progress = document.createElement('progress')
			progress.value = packet.progress
			progress.max = 1
			line.appendChild(progress)
		}
		if(packet.status == 'done'){
			var pre = document.createElement('pre')
			pre.appendChild(document.createTextNode(packet.data.text))
			line.innerHTML = ''
			line.appendChild(pre)
		}
		log.insertBefore(line, log.firstChild)
	}
}
function recognizeFile(file){
	document.querySelector("#log").innerHTML = ''
	Tesseract.recognize(file, {
		lang: document.querySelector('#langsel').value
	})
		.progress(function(packet){
			console.info(packet)
			progressUpdate(packet)
		})
		.then(function(data){
			console.log(data)
			progressUpdate({ status: 'done', data: data })
		})
}
</script>
<select id="langsel" onChange="window.lastFile && recognizeFile(window.lastFile)">
<option value='afr'     > Afrikaans             </option>
<option value='ara'     > Arabic                </option>
<option value='aze'     > Azerbaijani           </option>
<option value='bel'     > Belarusian            </option>
<option value='ben'     > Bengali               </option>
<option value='bul'     > Bulgarian             </option>
<option value='cat'     > Catalan               </option>
<option value='ces'     > Czech                 </option>
<option value='chi_sim' > Chinese               </option>
<option value='chi_tra' > Traditional Chinese   </option>
<option value='chr'     > Cherokee              </option>
<option value='dan'     > Danish                </option>
<option value='deu'     > German                </option>
<option value='ell'     > Greek                 </option>
<option value='eng'     selected> English                </option>
<option value='enm'     > English (Old)         </option>
<option value='meme'     > Internet Meme                </option>
<option value='epo'     > Esperanto             </option>
<option value='epo_alt' > Esperanto alternative </option>
<option value='equ'     > Math                  </option>
<option value='est'     > Estonian              </option>
<option value='eus'     > Basque                </option>
<option value='fin'     > Finnish               </option>
<option value='fra'     > French                </option>
<option value='frk'     > Frankish              </option>
<option value='frm'     > French (Old)          </option>
<option value='glg'     > Galician              </option>
<option value='grc'     > Ancient Greek         </option>
<option value='heb'     > Hebrew                </option>
<option value='hin'     > Hindi                 </option>
<option value='hrv'     > Croatian              </option>
<option value='hun'     > Hungarian             </option>
<option value='ind'     > Indonesian            </option>
<option value='isl'     > Icelandic             </option>
<option value='ita'     > Italian               </option>
<option value='ita_old' > Italian (Old)         </option>
<option value='jpn'     > Japanese              </option>
<option value='kan'     > Kannada               </option>
<option value='kor'     > Korean                </option>
<option value='lav'     > Latvian               </option>
<option value='lit'     > Lithuanian            </option>
<option value='mal'     > Malayalam             </option>
<option value='mkd'     > Macedonian            </option>
<option value='mlt'     > Maltese               </option>
<option value='msa'     > Malay                 </option>
<option value='nld'     > Dutch                 </option>
<option value='nor'     > Norwegian             </option>
<option value='pol'     > Polish                </option>
<option value='por'     > Portuguese            </option>
<option value='ron'     > Romanian              </option>
<option value='rus'     > Russian               </option>
<option value='slk'     > Slovakian             </option>
<option value='slv'     > Slovenian             </option>
<option value='spa'     > Spanish               </option>
<option value='spa_old' > Old Spanish           </option>
<option value='sqi'     > Albanian              </option>
<option value='srp'     > Serbian (Latin)       </option>
<option value='swa'     > Swahili               </option>
<option value='swe'     > Swedish               </option>
<option value='tam'     > Tamil                 </option>
<option value='tel'     > Telugu                </option>
<option value='tgl'     > Tagalog               </option>
<option value='tha'     > Thai                  </option>
<option value='tur'     > Turkish               </option>
<option value='ukr'     > Ukrainian             </option>
<option value='vie'     > Vietnamese            </option>
</select>

<button onClick="recognizeFile('../node/cosmic.png')">Sample Image</button>
<input type="file" onChange="recognizeFile(window.lastFile=this.files[0])">

<div id="log"></div>


<style>
#log > div {
    color: #313131;
    border-top: 1px solid #dadada;
    padding: 9px;
    display: flex;
}
#log > div:first-child {
    border: 0;
}
.status {
	min-width: 250px;
}
#log {
    border: 1px solid #dadada;
    padding: 10px;
    margin-top: 20px;
    min-height: 100px;
}
body {
    font-family: sans-serif;
    margin: 30px;
}
progress {
    display: block;
    width: 100%;
    transition: opacity 0.5s linear;
}
progress[value="1"] {
    opacity: 0.5;
}
</style>

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function progressUpdate(packet){

var log = document.getElementById('log');

if(log.firstChild && log.firstChild.status === packet.status){

if('progress' in packet){

var progress = log.firstChild.querySelector('progress')

progress.value = packet.progress

}

}else{

var line = document.createElement('div');

line.status = packet.status;

var status = document.createElement('div')

status.className = 'status'

status.appendChild(document.createTextNode(packet.status))

line.appendChild(status)

if('progress' in packet){

var progress = document.createElement('progress')

progress.value = packet.progress

progress.max = 1

line.appendChild(progress)

}

if(packet.status == 'done'){

var pre = document.createElement('pre')

pre.appendChild(document.createTextNode(packet.data.text))

line.innerHTML = ''

line.appendChild(pre)

}

log.insertBefore(line, log.firstChild)

}

function recognizeFile(file){

document.querySelector("#log").innerHTML = ''

Tesseract.recognize(file, {

lang: document.querySelector('#langsel').value

})

.progress(function(packet){

console.info(packet)

progressUpdate(packet)

})

.then(function(data){

console.log(data)

progressUpdate({ status: 'done', data: data })

})

}

</script>

<option value='afr' > Afrikaans </option>

<option value='ara' > Arabic </option>

<option value='aze' > Azerbaijani </option>

<option value='bel' > Belarusian </option>

<option value='ben' > Bengali </option>

<option value='bul' > Bulgarian </option>

<option value='cat' > Catalan </option>

<option value='ces' > Czech </option>

<option value='chi_sim' > Chinese </option>

<option value='chi_tra' > Traditional Chinese </option>

<option value='chr' > Cherokee </option>

<option value='dan' > Danish </option>

<option value='deu' > German </option>

<option value='ell' > Greek </option>

<option value='eng' selected> English </option>

<option value='enm' > English (Old) </option>

<option value='meme' > Internet Meme </option>

<option value='epo' > Esperanto </option>

<option value='epo_alt' > Esperanto alternative </option>

<option value='est' > Estonian </option>

<option value='eus' > Basque </option>

<option value='fin' > Finnish </option>

<option value='fra' > French </option>

<option value='frk' > Frankish </option>

<option value='frm' > French (Old) </option>

<option value='glg' > Galician </option>

<option value='grc' > Ancient Greek </option>

<option value='heb' > Hebrew </option>

<option value='hin' > Hindi </option>

<option value='hrv' > Croatian </option>

<option value='hun' > Hungarian </option>

<option value='ind' > Indonesian </option>

<option value='isl' > Icelandic </option>

<option value='ita' > Italian </option>

<option value='ita_old' > Italian (Old) </option>

<option value='jpn' > Japanese </option>

<option value='kan' > Kannada </option>

<option value='kor' > Korean </option>

<option value='lav' > Latvian </option>

<option value='lit' > Lithuanian </option>

<option value='mal' > Malayalam </option>

<option value='mkd' > Macedonian </option>

<option value='mlt' > Maltese </option>

<option value='msa' > Malay </option>

<option value='nld' > Dutch </option>

<option value='nor' > Norwegian </option>

<option value='pol' > Polish </option>

<option value='por' > Portuguese </option>

<option value='ron' > Romanian </option>

<option value='rus' > Russian </option>

<option value='slk' > Slovakian </option>

<option value='slv' > Slovenian </option>

<option value='spa' > Spanish </option>

<option value='spa_old' > Old Spanish </option>

<option value='sqi' > Albanian </option>

<option value='srp' > Serbian (Latin) </option>

<option value='swa' > Swahili </option>

<option value='swe' > Swedish </option>

<option value='tam' > Tamil </option>

<option value='tel' > Telugu </option>

<option value='tgl' > Tagalog </option>

<option value='tur' > Turkish </option>

<option value='ukr' > Ukrainian </option>

<option value='vie' > Vietnamese </option>

</select>

<button onClick="recognizeFile('../node/cosmic.png')">Sample Image</button>

<style>

#log > div {

color: #313131;

border-top: 1px solid #dadada;

padding: 9px;

display: flex;

}

#log > div:first-child {

border: 0;

}

.status {

min-width: 250px;

}

#log {

border: 1px solid #dadada;

padding: 10px;

margin-top: 20px;

min-height: 100px;

}

body {

font-family: sans-serif;

margin: 30px;

}

progress {

display: block;

width: 100%;

transition: opacity 0.5s linear;

}

progress[value="1"] {

opacity: 0.5;

}

</style>

ดูเพิ่มเติม https://github.com/naptha/tesseract.js

Tesseract.js แปลงข้อความในรูปภาพเป็นข้อความ text

Tesseract.js is a javascript library that gets words in almost any language out of images.

หมวดหมู่

ติดต่อเรา

ติดตามเรา

Tesseract.js แปลงข้อความในรูปภาพเป็นข้อความ text

Tesseract.js is a javascript library that gets words in almost any language out of images.

หมวดหมู่

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