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Resize and crop

You can resize the image or crop it the way you like. These operations are performed in real time and use almost no CPU.

 

Resize

Enable resizing or cropping

Delphi VideoCapture1.Video_ResizeOrCrop_Enabled := true;
C++/C# VideoCapture1.Video_ResizeOrCrop_Enabled = true;

 

Set width and height
Delphi VideoCapture1.Video_Resize_NewWidth := StrToInt(edResizeWidth.Text);
VideoCapture1.Video_Resize_NewHeight := StrToInt(edResizeHeight.Text);
C++/C# VideoCapture1.Video_Resize_NewWidth = Convert.ToInt32(edResizeWidth.Text);
VideoCapture1.Video_Resize_NewHeight = Convert.ToInt32(edResizeHeight.Text);

 

The image aspect ratio change mode - letterbox (add black margins to the edges) or stretch.

Delphi VideoCapture1.Video_Resize_LetterBox := cbResizeLetterbox.Checked;
C++/C# VideoCapture1.Video_Resize_LetterBox = cbResizeLetterbox.Checked;

 

You can also select one of several resizing algorithms. They differ in quality and CPU usage.

Delphi case cbResizeMode.ItemIndex of
0: VideoCapture1.Video_Resize_Mode := rm_NearestNeighbor;
1: VideoCapture1.Video_Resize_Mode := rm_Bilinear;
2: VideoCapture1.Video_Resize_Mode := rm_Bilinear_HQ;
3: VideoCapture1.Video_Resize_Mode := rm_Bicubic;
4: VideoCapture1.Video_Resize_Mode := rm_Bicubic_HQ;
end;
C++/C# switch (cbResizeMode.SelectedIndex)
{
case 0: VideoCapture1.Video_Resize_Mode = VisioForge_Video_Capture_4.TxVFResizeMode.rm_NearestNeighbor; break;
case 1: VideoCapture1.Video_Resize_Mode = VisioForge_Video_Capture_4.TxVFResizeMode. rm_Bilinear; break;
case 2: VideoCapture1.Video_Resize_Mode = VisioForge_Video_Capture_4.TxVFResizeMode.rm_Bilinear_HQ; break;
case 3: VideoCapture1.Video_Resize_Mode = VisioForge_Video_Capture_4.TxVFResizeMode.rm_Bicubic; break;
case 4: VideoCapture1.Video_Resize_Mode = VisioForge_Video_Capture_4.TxVFResizeMode.rm_Bicubic_HQ; break;
};

 

Crop

Enable resizing or cropping
Delphi VideoCapture1.Video_ResizeOrCrop_Enabled := true;
C++/C# VideoCapture1.Video_ResizeOrCrop_Enabled = true;

 

Set area

Delphi VideoCapture1.Video_Crop_Left := StrToInt(edCropLeft.Text);
VideoCapture1.Video_Crop_Top := StrToInt(edCropTop.Text);
VideoCapture1.Video_Crop_Right := StrToInt(edCropRight.Text);
VideoCapture1.Video_Crop_Bottom := StrToInt(edCropBottom.Text);
C++/C# VideoCapture1.Video_Crop_Left = Convert.ToInt32(edCropLeft.Text);
VideoCapture1.Video_Crop_Top = Convert.ToInt32(edCropTop.Text);
VideoCapture1.Video_Crop_Right = Convert.ToInt32(edCropRight.Text);
VideoCapture1.Video_Crop_Bottom = Convert.ToInt32(edCropBottom.Text);

 

 

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