[37] | 1 | /* |
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| 2 | * Speeded-Up Robust Features (SURF) |
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| 3 | * http://people.ee.ethz.ch/~surf |
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| 4 | * |
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| 5 | * Authors: Herbert Bay, Andreas Ess, Geert Willems |
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| 6 | * Windows port by Stefan Saur |
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| 7 | * |
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| 8 | * Copyright (2006): ETH Zurich, Switzerland |
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| 9 | * Katholieke Universiteit Leuven, Belgium |
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| 10 | * All rights reserved. |
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| 11 | * |
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| 12 | * For details, see the paper: |
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| 13 | * Herbert Bay, Tinne Tuytelaars, Luc Van Gool, |
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| 14 | * "SURF: Speeded Up Robust Features" |
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| 15 | * Proceedings of the ninth European Conference on Computer Vision, May 2006 |
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| 16 | * |
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| 17 | * Permission to use, copy, modify, and distribute this software and |
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| 18 | * its documentation for educational, research, and non-commercial |
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| 19 | * purposes, without fee and without a signed licensing agreement, is |
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| 20 | * hereby granted, provided that the above copyright notice and this |
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| 21 | * paragraph appear in all copies modifications, and distributions. |
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| 22 | * |
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| 23 | * Any commercial use or any redistribution of this software |
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| 24 | * requires a license from one of the above mentioned establishments. |
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| 25 | * |
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| 26 | * For further details, contact Andreas Ess (aess@vision.ee.ethz.ch). |
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| 27 | */ |
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| 28 | |
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| 29 | #ifndef __IMAGE_H |
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| 30 | #define __IMAGE_H |
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| 31 | |
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| 32 | namespace surf { |
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| 33 | |
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| 34 | class Image { |
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| 35 | |
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| 36 | public: |
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| 37 | //! Constructor |
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| 38 | Image(const int w, const int h); |
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| 39 | |
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| 40 | //! Destructor |
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| 41 | ~Image(); |
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| 42 | |
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| 43 | //! Constructor from existing double array |
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| 44 | Image(double **pixels, int w, int h); |
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| 45 | |
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| 46 | //! constructor for integral image |
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| 47 | Image(Image *im, bool doubleImSize=false); |
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| 48 | |
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| 49 | //! Pass a single frame to the (pre-initialized) structure |
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| 50 | void setFrame(unsigned char *im); |
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| 51 | void setFrame(Image *im); |
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| 52 | |
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| 53 | //! Divide the image size by two |
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| 54 | Image *HalfImage(); |
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| 55 | |
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| 56 | //! Get Hessian response at a certain point |
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| 57 | double getHessian(int *x); |
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| 58 | |
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| 59 | //! Get Trace of the Hessian |
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| 60 | int getTrace(int *x); |
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| 61 | |
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| 62 | //! Get the pointer to the image pixels |
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| 63 | double **getPixels() const; |
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| 64 | |
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| 65 | //! Get the pixel intensity at location (\a x, \a y) |
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| 66 | double getPix(const int x, const int y) const { |
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| 67 | return _pixels[y][x]; |
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| 68 | } |
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| 69 | |
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| 70 | //! Overload of getPix returning the reference |
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| 71 | double &getPix(const int x, const int y) { |
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| 72 | return _pixels[y][x]; |
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| 73 | } |
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| 74 | |
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| 75 | //! Set the Pixel at location (\a x, \a y) to the value "\a val" |
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| 76 | void setPix(const int x, const int y, const double val) { |
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| 77 | _pixels[y][x] = val; |
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| 78 | } |
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| 79 | |
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| 80 | //! get width |
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| 81 | int getWidth(); |
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| 82 | |
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| 83 | //! get height |
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| 84 | int getHeight(); |
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| 85 | |
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| 86 | //! set width |
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| 87 | void setWidth(int wi); |
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| 88 | |
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| 89 | //! set height |
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| 90 | void setHeight(int hi); |
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| 91 | |
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| 92 | protected: |
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| 93 | //! Allocate 2D array of image pixels |
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| 94 | void allocPixels(int w, int h); |
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| 95 | |
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| 96 | private: |
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| 97 | //! Actual image buffer |
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| 98 | double *_buf; |
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| 99 | |
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| 100 | //! 2D array of image pixels |
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| 101 | double **_pixels; |
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| 102 | |
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| 103 | //! Image height and width |
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| 104 | int _height, _width; |
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| 105 | |
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| 106 | //! Original image height |
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| 107 | int _orihi; |
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| 108 | |
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| 109 | //! Flag if this image is just a reference |
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| 110 | bool _ref; |
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| 111 | }; |
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| 112 | |
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| 113 | } |
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| 114 | |
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| 115 | #endif //IMAGE_H |
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