CalculateRegionArea Method (original) (raw)
Summary
Gets the total number of pixels in the image region.
Syntax
C#
Objective-C
C++/CLI
Java
Python
public long CalculateRegionArea() @property (nonatomic, assign, readonly) unsigned long regionArea public long calculateRegionArea(); public:
int64 CalculateRegionArea();
def CalculateRegionArea(self): Return Value
The pixel count.
Example
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
using Leadtools.ImageProcessing.Color;
using Leadtools.Dicom;
using Leadtools.Drawing;
using Leadtools.Controls;
using Leadtools.Svg;
public void CalculateRegionAreaExample()
{
RasterCodecs codecs = new RasterCodecs();
string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
// Load the image
RasterImage image = codecs.Load(srcFileName);
// Add a region to the image
LeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3);
image.AddEllipseToRegion(null, rc, RasterRegionCombineMode.Set);
// Get the number of pixels in the region
long area = image.CalculateRegionArea();
Console.WriteLine("Number of pixels in region after a region is added: {0}", area);
image.Dispose();
codecs.Dispose();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
Leadtools Assembly