public static void Run()
{
// ExStart:SettingMarkThreshold
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_OCR();
// Load template file
OmrTemplate template = OmrTemplate.Load(dataDir + "questions.amr");
// Load the image to be analyzed
OmrImage image = OmrImage.Load(dataDir + "answers.jpg");
// Create an instance of OmrEngine and pass object of OmrTemplate as parameter
OmrEngine engine = new OmrEngine(template);
// Get the configurations of OmrEngine
OmrConfig config = engine.Configuration;
// Set fill threshold
config.FillThreshold = 0.12;
// Extract the data
OmrProcessingResult result = engine.ExtractData(new OmrImage[] { image });
// ExEnd:SettingMarkThreshold
}
public static void Run()
{
// ExStart:SetElementLevelThreshold
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_OCR();
// Load template file
OmrTemplate template = OmrTemplate.Load(dataDir + "questions.amr");
// Load the image to be analyzed
OmrImage image = OmrImage.Load(dataDir + "answers.jpg");
// Get the first page of the template
OmrPage page = template.Pages[0];
// Create an element by passing the name, location and size
GridElement element = new GridElement("grid1", new PointF(10, 20), new SizeF(60, 30));
// Add element to the page
page.Elements.Add(element);
// Create configuration for the element
element.Configuration = new OmrConfig();
// Set the TrimWhitePixels to false
element.Configuration.TrimWhitePixels = false;
// Create an instance of OmrEngine and pass object of OmrTemplate as parameter
OmrEngine engine = new OmrEngine(template);
// Extract the data
OmrProcessingResult result = engine.ExtractData(new OmrImage[] { image });
// ExEnd:SetElementLevelThreshold
}
public static void Run()
{
// ExStart:LoadTemplateFromUrl
string templateUrl = "https://Github.com/asposeocr/Aspose_OCR_NET/raw/master/Examples/Data/OCR/questions.amr";
string imageUrl = "https://Github.com/asposeocr/Aspose_OCR_NET/raw/master/Examples/Data/OCR/answers.jpg";
// Initialize an instance of OmrTemplate by loading the OMR template from URL
OmrTemplate template = OmrTemplate.LoadFromUrl(templateUrl);
// image loading from url
OmrImage image = OmrImage.LoadFromUrl(imageUrl);
// continue working with template and image as usual
OmrEngine engine = new OmrEngine(template);
OmrProcessingResult result = engine.ExtractData(new OmrImage[] { image });
// Get all page data into an instance of Hashtable
Hashtable[] pages = result.PageData;
// Loop over all the pages
foreach (Hashtable page in pages)
{
// Display key and value
foreach (string key in page.Keys)
{
Console.WriteLine("[KEY] " + key + " => " + "[VALUE] " + page[key]);
}
}
// ExEnd:LoadTemplateFromUrl
}
public static void Run()
{
// ExStart:SkewImageCorrectionUsingAlgorithm
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_OCR();
// Load template file
OmrTemplate template = OmrTemplate.Load(dataDir + "questions.amr");
// Load the image to be analyzed
OmrImage image = OmrImage.Load(dataDir + "answers.jpg");
// Area of the image to be processed
Rectangle area = new Rectangle(0, 0, image.Width, image.Height);
// Grayscale conversion
GrayscaleAlgorithm gs = new GrayscaleAlgorithm();
gs.Process(image, area);
// Binarization
AverageThresholdAlgorithm threshold = new AverageThresholdAlgorithm();
threshold.Process(image, area);
// Skew correction
SkewCorrectionAlgorithm skewCorrection = new SkewCorrectionAlgorithm();
skewCorrection.Process(ref image, area);
// save image
image.AsBitmap().Save(dataDir + "result_out.jpg");
// ExEnd:SkewImageCorrectionUsingAlgorithm
}
public static void Run()
{
// ExStart:DetectImageResolutionAutomatically
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_OCR();
// Load template file
OmrTemplate template = OmrTemplate.Load(dataDir + "questions.amr");
// Load the image to be analyzed
OmrImage image = OmrImage.Load(dataDir + "answers.jpg");
//Set the auto image resolution detection property
image.AutoDetectResolution = true;
// Instantiate the recognition engine for the template
OmrEngine engine = new OmrEngine(template);
// Extract data. This template has only one page.
OmrProcessingResult result = engine.ExtractData(new OmrImage[] { image });
// Load actual result from
Hashtable OmrResult = result.PageData[0];
// Get Collection of Keys
ICollection key = OmrResult.Keys;
foreach (string k in key)
{
Console.WriteLine(k + ": " + OmrResult[k]);
}
// ExEnd:DetectImageResolutionAutomatically
}
public static void Run()
{
try
{
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_OCR();
// Load template file
OmrTemplate template = OmrTemplate.Load(dataDir + "sample_1.amr");
// Load the image to be analyzed
OmrImage image = OmrImage.Load(dataDir + "sample1.jpg");
// do not forget to set the license for BarCode in case BarCode elements are used
//Aspose.BarCode.License licenseBarCode = new Aspose.BarCode.License();
//licenseBarCode.SetLicense(dataDir + "Aspose.Total.lic");
//// do not forget to set the license for BarCode in case BarCode elements are used
//var licenseOmr = new Aspose.OCR.License();
//licenseOmr.SetLicense(dataDir + "Aspose.Total.lic");
// Adding BarCode element requires creation of BarcodeElement object
// While specifying the barcode display name, its position and size
BarcodeElement barcodeElement = new BarcodeElement("Aztec BarCode", new PointF(0, 0), new SizeF(205, 205));
// Add the BarCode element to the page element collection
template.Pages[0].Elements.Add(barcodeElement);
// Create an instance of OmrEngine and load the template using file path
OmrEngine engine = new OmrEngine(template);
// Extract OMR data and store the results in an instance of OmrProcessingResults
OmrProcessingResult result = engine.ExtractData(new[] { image });
// Get all page data into an instance of Hashtable
Hashtable[] pages = result.PageData;
// Loop over all the pages
foreach (Hashtable page in pages)
{
// Display key and value
foreach (string key in page.Keys)
{
Console.WriteLine("key: " + key + ": " + "value: " + page[key]);
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
// Console.WriteLine(ex.Message + "\nThis example will only work if you apply a valid Aspose License. You can purchase full license or get 30 day temporary license from http:// Www.aspose.com/purchase/default.aspx.");
}
}
public static void Run()
{
// ExStart:SkewedImageSecondMethod
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_OCR();
// Load the image to be analyzed
OmrImage image = OmrImage.Load(dataDir + "answers.jpg");
OmrEngine engine = new OmrEngine(new OmrTemplate());
// Get skew degree of the image
double degree = engine.GetSkewDegree(image);
// Rotate image to correct skew
engine.RotateImage(ref image, degree);
// Save image
image.AsBitmap().Save(dataDir + "result_out.jpg");
// ExEnd:SkewedImageSecondMethod
}
public static void Run()
{
// ExStart:ExtractText
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_OCR();
// Load template file
OmrTemplate template = OmrTemplate.Load(dataDir + "questions.amr");
// Load the image to be analyzed
OmrImage image = OmrImage.Load(dataDir + "answers.jpg");
// Set resource for TextOcrElement
TextOcrElement.Resource = dataDir + "Aspose.OCR.Spanish.Resources.zip";
// Create an instance of TextOcrElement and initialize it by specifying the location of text and its size in mm
TextOcrElement textElement = new TextOcrElement("OCR Text", new PointF(23.6f, 15.5f), new SizeF(14.6f, 4.7f));
// Add the TextOcrElement to the page element collection
template.Pages[0].Elements.Add(textElement);
// Create an instance of OmrEngine and load the template using file path
OmrEngine engine = new OmrEngine(template);
// Extract OMR data and store the results in an instance of OmrProcessingResults
OmrProcessingResult result = engine.ExtractData(new OmrImage[] { image });
// Get all page data into an instance of Hashtable
Hashtable[] pages = result.PageData;
// Loop over all the pages
foreach (Hashtable page in pages)
{
// Display key and value
foreach (string key in page.Keys)
{
Console.WriteLine("key: " + key + ": " + "value: " + page[key]);
}
}
// ExEnd:ExtractText
}
