File size: 2,505 Bytes
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let video;
function startWebcam() {
video = document.getElementById('webcam');
navigator.mediaDevices.getUserMedia({ video: true })
.then(stream => {
video.srcObject = stream;
})
.catch(console.error);
}
function captureImage() {
const canvas = document.createElement('canvas');
canvas.width = video.videoWidth;
canvas.height = video.videoHeight;
const context = canvas.getContext('2d');
context.drawImage(video, 0, 0, canvas.width, canvas.height);
const imageData = canvas.toDataURL('image/jpeg');
fetch('/capture', {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({ image: imageData })
})
.then(response => response.json())
.then(data => {
console.log(data.message);
alert("Image captured successfully!");
document.getElementById('captured-image').src = imageData;
document.getElementById('captured-image').style.display = 'block';
})
.catch(console.error);
}
function performOCR() {
clearOCRResult();
showLoading();
disableButton();
fetch('/camocr', {
method: 'POST',
headers: {
'Content-Type': 'application/json'
}
})
.then(response => response.json())
.then(data => {
document.getElementById('ocr-result').innerText = data.result;
hideLoading();
enableButton();
})
.catch(error => {
console.error(error);
hideLoading();
enableButton();
});
}
function showLoading() {
const loadingElement = document.getElementById('loading');
loadingElement.style.display = 'block';
let dots = 0;
loadingInterval = setInterval(() => {
dots = (dots + 1) % 4;
loadingElement.innerText = 'Loading' + '.'.repeat(dots);
}, 500);
}
function hideLoading() {
clearInterval(loadingInterval);
const loadingElement = document.getElementById('loading');
loadingElement.style.display = 'none';
}
function clearOCRResult() {
document.getElementById('ocr-result').innerText = '';
}
function disableButton() {
const button = document.querySelector('button[onclick="performOCR()"]');
button.disabled = true;
button.style.backgroundColor = '#cccccc';
}
function enableButton() {
const button = document.querySelector('button[onclick="performOCR()"]');
button.disabled = false;
button.style.backgroundColor = '#007bff';
} |