public interface ILcdRasterReferencer
This interface defines a method to reference rasters based on tie points. A pair of tie points consists of a point in image coordinates (pixels) and a point in model coordinates (in the given model reference) onto which it should be mapped. Implementations of this interface try to satisfy the given mapping in different ways, by returning a new model reference and raster bounds.
int imageWidth = 1000;
int imageHeight = 1000;
ILcdPoint[] imagePoints = new ILcdPoint[]{
new TLcdXYPoint(0, 0),
new TLcdXYPoint(1000, 0),
new TLcdXYPoint(0, 1000),
new TLcdXYPoint(1000, 1000),
new TLcdXYPoint(126, 274),
new TLcdXYPoint(983, 829)
};
ILcdModelReference modelPointsReference = new TLcdGeodeticReference();
ILcdPoint[] modelPoints = new ILcdPoint[]{
new TLcdLonLatPoint(20.4, 30.8),
new TLcdLonLatPoint(25.1, 30.6),
new TLcdLonLatPoint(20.9, 35.7),
new TLcdLonLatPoint(25.2, 35.3),
new TLcdLonLatPoint(21.0, 31.9),
new TLcdLonLatPoint(24.9, 35.0),
};
int degree = 2;
ILcdRasterReferencer rasterReferencer =
new TLcdPolynomialRasterReferencer(degree);
ILcdRasterReference rasterReference =
rasterReferencer.createRasterReference(imageWidth,
imageHeight,
imagePoints,
modelPointsReference,
modelPoints,
null);
ILcdModelReference modelReference = rasterReference.getModelReference();
ILcdBounds bounds = rasterReference.getBounds();
Modifier and Type | Method and Description |
---|---|
ILcdRasterReference |
createRasterReference(int aImageWidth,
int aImageHeight,
ILcdPoint[] aImageTiePoints,
ILcdModelReference aModelReference,
ILcdPoint[] aModelTiePoints,
ILcdPoint[] aMappedModelTiePointsSFCT)
Creates a raster reference for an image of a given size, based on pairs of
tie points.
|
ILcdRasterReference createRasterReference(int aImageWidth, int aImageHeight, ILcdPoint[] aImageTiePoints, ILcdModelReference aModelReference, ILcdPoint[] aModelTiePoints, ILcdPoint[] aMappedModelTiePointsSFCT)
An optional array can be provided for obtaining the model tie points transformed to image coordinates on return. These reflect the effects of the referencing. The differences between the transformed model tie points (expressed in pixels) and the original image tie points (also expressed in pixels) provide a measure for the success of the referencing. With a perfect raster reference, the resulting model tie points correspond to the original image tie points.
aImageWidth
- the image width of the raster, expressed
in pixels.aImageHeight
- the image height of the raster, expressed
in pixels.aImageTiePoints
- the image tie points, expressed in pixels.aModelReference
- the reference of the model tie points.aModelTiePoints
- the model tie points corresponding to the
image tie points, expressed in model
coordinates.aMappedModelTiePointsSFCT
- an optional array for obtaining the
the model tie points mapped to image
coordinates upon return. This parameter
may be null
, if the mapped
points are not required.IllegalArgumentException
- if the bounds can't be created because
the input can't be handled successfully by the given implementation.