Filters to downscale Image - C#
BarCode Reader SDK sample in C# demonstrating ‘Filters to downscale Image’
Program.cs
using System;
using System.Diagnostics;
using Bytescout.BarCodeReader;
namespace BarcodesFromPDF
{
class Program
{
static void Main()
{
using (var reader_default = new Reader("demo","demo"))
{
// Limit search to 1-dimensional barcodes only (exclude 2D barcodes to speed up the processing).
// Change to barcodeReader.BarcodeTypesToFind.SetAll() to scan for all supported 1D and 2D barcode types
// or select specific type, e.g. barcodeReader.BarcodeTypesToFind.PDF417 = True
reader_default.BarcodeTypesToFind.All1D = true;
// Using StopWatch to track operation time
var sw_reader_default = new Stopwatch();
sw_reader_default.Start();
Console.WriteLine("Reading barcodes from PDF document with default resolution ...\n");
FoundBarcode[] barcodes = reader_default.ReadFrom("example.pdf");
foreach (FoundBarcode barcode in barcodes)
{
Console.WriteLine("Found barcode with type '{0}' and value '{1}' on page {2} at {3}",
barcode.Type, barcode.Value, barcode.Page, barcode.Rect);
}
sw_reader_default.Stop();
Console.WriteLine("\nELAPSED TIME (in milliseconds): " + sw_reader_default.ElapsedMilliseconds);
}
Console.WriteLine("\n===============\n");
using (var reader_with_filter = new Reader("demo", "demo"))
{
// Limit search to 1-dimensional barcodes only (exclude 2D barcodes to speed up the processing).
// Change to barcodeReader.BarcodeTypesToFind.SetAll() to scan for all supported 1D and 2D barcode types
// or select specific type, e.g. barcodeReader.BarcodeTypesToFind.PDF417 = True
reader_with_filter.BarcodeTypesToFind.All1D = true;
// Setting PDF rendering resolution to 150
reader_with_filter.PDFRenderingResolution = 150;
// Using StopWatch to track operation time
var sw_reader_optimized = new Stopwatch();
sw_reader_optimized.Start();
Console.WriteLine("Reading barcodes from PDF document with filter set for resolution ...\n");
FoundBarcode[] barcodes = reader_with_filter.ReadFrom("example.pdf");
foreach (FoundBarcode barcode in barcodes)
{
Console.WriteLine("Found barcode with type '{0}' and value '{1}' on page {2} at {3}",
barcode.Type, barcode.Value, barcode.Page, barcode.Rect);
}
sw_reader_optimized.Stop();
Console.WriteLine("\nELAPSED TIME (in milliseconds): " + sw_reader_optimized.ElapsedMilliseconds);
}
Console.WriteLine();
Console.WriteLine("Press any key to continue.");
Console.ReadKey();
}
}
}