Class YarpImageHelper
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- YarpImageHelper
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public class YarpImageHelper extends java.lang.Object
Helper class to convert YARP image to Matlab matrices (images).
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Constructor Summary
Constructors Constructor Description YarpImageHelper(int h, int w)
Constructor, specify height and width of the image you are going to convert.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description float[][]
get2DMatrix(ImageFloat img)
Converts a floating point YARP image to a two dimensional array.short[][]
get2DMatrix(ImageRgb img)
Converts a color YARP image to a two dimensional array.float[][]
get2DMatrixBlue(ImageRgbFloat img)
Access a floating point YARP image by planes.float[][]
get2DMatrixGreen(ImageRgbFloat img)
Access a floating point YARP image by planes.float[][]
get2DMatrixRed(ImageRgbFloat img)
Access a floating point YARP image by planes.short[][][]
get3DMatrix(ImageRgb img)
Converts a YARP image to a 3D array.short[][]
getB(ImageRgb img)
Access a YARP image by planes.short[][]
getG(ImageRgb img)
Access a YARP image by planes.short[][]
getMonoMatrix(ImageRgb img)
Converts a YARP image to grayscale.short[][]
getR(ImageRgb img)
Access a YARP image by planes.static short[]
getRawImg(ImageRgb img)
Fast conversion of a YARP image to a one dimensional array.ImageRgb
setRawImg(short[] vec1ds, int height, int width, int pixelSize)
Fast conversion from matlab image format (based on leo's structure) to a YARP image format in MATLAB, the reshape function to modify the matrix to be a 1d vector IN = reshape(label, [h*w*pixelSize 1]); and, if not previously done cast it to int16 eg: tempImg = cast(IN,'int16'); \author Vadim Tikhanoff
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Method Detail
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getMonoMatrix
public short[][] getMonoMatrix(ImageRgb img)
Converts a YARP image to grayscale. Returns a height by width two dimensional array. This array is compatible with a Matlab matrix.- Parameters:
img
- input image- Returns:
- the two dimensional array which contains the image
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get3DMatrix
public short[][][] get3DMatrix(ImageRgb img)
Converts a YARP image to a 3D array. This array is compatible with a [HxWx3] Matlab matrix. Note: passing 3d arrays from/to Matlab/Java is SLOW (at least on Matlab 6.5); use getB/getR/getG or get2DMatrix.- Parameters:
img
- input image- Returns:
- the three dimensional array which contains the image
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getR
public short[][] getR(ImageRgb img)
Access a YARP image by planes. Returns a 2D array which contains the red plane, this is a [HxW] array compatible with Matlab.- Parameters:
img
- input image- Returns:
- the two dimensional array which contains the red plane
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getG
public short[][] getG(ImageRgb img)
Access a YARP image by planes. Returns a 2D array which contains the green plane, this is a [HxW] array compatible with Matlab.- Parameters:
img
- input image- Returns:
- the two dimensional array which contains the green plane
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getB
public short[][] getB(ImageRgb img)
Access a YARP image by planes. Returns a 2D array which contains the blue plane, this is a [HxW] array compatible with Matlab.- Parameters:
img
- input image- Returns:
- the two dimensional array which contains the blue plane
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get2DMatrix
public short[][] get2DMatrix(ImageRgb img)
Converts a color YARP image to a two dimensional array. Returns a [Hx3*W] array which contains the 'justaposition' of the three color planes of the image. This array can be copied into a Matlab matrix: OUT=[R|G|B] where R, G, B are three [HxW] matrices formed by the color planes. From OUT you can create a color image [HxWx3] by typing: IMG=uint8(H,W,3); IMG(:,:,1)=OUT(:,1:W); IMG(:,:,2)=OUT(:,W+1:2*W); IMG(:,:,3)=OUT(:,2*W+1:3*W);- Parameters:
img
- input image- Returns:
- output array
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get2DMatrix
public float[][] get2DMatrix(ImageFloat img)
Converts a floating point YARP image to a two dimensional array.- Parameters:
img
- input image- Returns:
- output array
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get2DMatrixRed
public float[][] get2DMatrixRed(ImageRgbFloat img)
Access a floating point YARP image by planes. Returns a 2D array which contains the red plane, this is a [HxW] array compatible with Matlab.- Parameters:
img
- input image- Returns:
- the two dimensional array which contains the red plane
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get2DMatrixGreen
public float[][] get2DMatrixGreen(ImageRgbFloat img)
Access a floating point YARP image by planes. Returns a 2D array which contains the green plane, this is a [HxW] array compatible with Matlab.- Parameters:
img
- input image- Returns:
- the two dimensional array which contains the green plane
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get2DMatrixBlue
public float[][] get2DMatrixBlue(ImageRgbFloat img)
Access a floating point YARP image by planes. Returns a 2D array which contains the blue plane, this is a [HxW] array compatible with Matlab.- Parameters:
img
- input image- Returns:
- the two dimensional array which contains the blue plane
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getRawImg
public static short[] getRawImg(ImageRgb img)
Fast conversion of a YARP image to a one dimensional array. In MATLAB, USE: reshape(OUT, [height width pixelsize]); Extended function to work with padding (Vadim Tikhanoff) \author Leo Pape- Parameters:
img
- input image- Returns:
- output array
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setRawImg
public ImageRgb setRawImg(short[] vec1ds, int height, int width, int pixelSize)
Fast conversion from matlab image format (based on leo's structure) to a YARP image format in MATLAB, the reshape function to modify the matrix to be a 1d vector IN = reshape(label, [h*w*pixelSize 1]); and, if not previously done cast it to int16 eg: tempImg = cast(IN,'int16'); \author Vadim Tikhanoff- Returns:
- output yarp image
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