public static List <ImageContainer> Parse(string filepath)
{
List <ImageContainer> imageContainers = new List <ImageContainer>();
if (!File.Exists(filepath))
{
throw new FileNotFoundException("File not found", filepath);
}
// Only look at page 1 - serious memory saver for hundred page PDFs
PdfImageExtractor.ExtractImagesFromPage1(filepath).ForEach(x =>
{
ImageContainer ic = new ImageContainer()
{
Image = x,
QrCodes = new List <QRCode>()
};
// Of note: QRCodes of extreme size will NOT be detected by ZXing so we need to drop scale a few times, checking each
// 1:1
QRCode.ExtractFrom(ic.Image.DrawingImage).ForEach(y =>
{
ic.QrCodes.Add(y);
});
// 5:1
QRCode.ExtractFrom(ImageUtils.ResizeImage(ic.Image.DrawingImage, ic.Image.DrawingImage.Width / 5, ic.Image.DrawingImage.Height / 5)).ForEach(y =>
{
if (!ic.QrCodes.Exists(model => model.Text == y.Text))
{
ic.QrCodes.Add(y);
}
});
// 10:1
QRCode.ExtractFrom(ImageUtils.ResizeImage(ic.Image.DrawingImage, ic.Image.DrawingImage.Width / 10, ic.Image.DrawingImage.Height / 10)).ForEach(y =>
{
if (!ic.QrCodes.Exists(model => model.Text == y.Text))
{
ic.QrCodes.Add(y);
}
});
imageContainers.Add(ic);
});
return(imageContainers);
}
