I have an ImageData
object but Tesseract.js only takes blob
objects. How can I convert the ImageData
to a blob
as performantly as possible?
Referring here, the code should look like -
const ImageDataToBlob = function(imageData){
let w = imageData.width;
let h = imageData.height;
let canvas = document.createElement("canvas");
canvas.width = w;
canvas.height = h;
let ctx = canvas.getContext("2d");
ctx.putImageData(imageData, 0, 0); // synchronous
return new Promise((resolve) => {
canvas.toBlob(resolve); // implied image/png format
});
}