|  | iipsrv
    1.1
    iipsrv is an advanced high-performance feature-rich image server for web-based streamed viewing and zooming of ultra high-resolution images | 
Image Processing Transforms. More...
#include <Transforms.h>
| Public Member Functions | |
| std::string | getDescription () | 
| Get description of processing engine. | |
| void | normalize (RawTile &in, const std::vector< float > &max, const std::vector< float > &min) | 
| Function to create normalized array.  More... | |
| void | cmap (RawTile &in, enum cmap_type cmap) | 
| Function to apply colormap to gray images.  More... | |
| void | inv (RawTile &in) | 
| Function to invert colormaps.  More... | |
| void | shade (RawTile &in, int h_angle, int v_angle) | 
| Hillshading function to simulate raking light images.  More... | |
| void | LAB2sRGB (RawTile &in) | 
| Convert from CIELAB to sRGB colour space.  More... | |
| void | contrast (RawTile &in, float c) | 
| Function to apply a contrast adjustment and clip to 8 bit.  More... | |
| void | gamma (RawTile &in, float g) | 
| Apply a gamma correction.  More... | |
| void | interpolate_nearestneighbour (RawTile &in, unsigned int w, unsigned int h) | 
| Resize image using nearest neighbour interpolation.  More... | |
| void | interpolate_bilinear (RawTile &in, unsigned int w, unsigned int h) | 
| Resize image using bilinear interpolation.  More... | |
| void | rotate (RawTile &in, float angle) | 
| Rotate image - currently only by 90, 180 or 270 degrees, other values will do nothing.  More... | |
| void | greyscale (RawTile &in) | 
| Convert image to grayscale.  More... | |
| void | twist (RawTile &in, const std::vector< std::vector< float > > &ctw) | 
| Apply a color twist.  More... | |
| void | flatten (RawTile &in, int bands) | 
| Extract bands.  More... | |
| void | flip (RawTile &in, int o) | 
| Flip image.  More... | |
| std::vector< unsigned int > | histogram (RawTile &in, const std::vector< float > &max, const std::vector< float > &min) | 
| Calculate histogram of an image.  More... | |
| unsigned char | threshold (std::vector< unsigned int > &histogram) | 
| Calculate threshold for binary (bi-level) segmentation.  More... | |
| void | binary (RawTile &in, unsigned char threshold) | 
| Create binary (bi-level) image.  More... | |
| void | equalize (RawTile &in, std::vector< unsigned int > &histogram) | 
| Apply histogram equalization to an image.  More... | |
Image Processing Transforms.
| void Transform::binary | ( | RawTile & | in, | 
| unsigned char | threshold | ||
| ) | 
Create binary (bi-level) image.
| in | input image | 
| threshold | threshold for binary image segmentation | 
| void Transform::cmap | ( | RawTile & | in, | 
| enum cmap_type | cmap | ||
| ) | 
Function to apply colormap to gray images.
| in | tile data to be converted | 
| cmap | color map to apply. | 
| void Transform::contrast | ( | RawTile & | in, | 
| float | c | ||
| ) | 
Function to apply a contrast adjustment and clip to 8 bit.
| in | tile data to be adjusted | 
| c | contrast value | 
| void Transform::equalize | ( | RawTile & | in, | 
| std::vector< unsigned int > & | histogram | ||
| ) | 
Apply histogram equalization to an image.
| in | input image | 
| histogram | image histogram | 
| void Transform::flatten | ( | RawTile & | in, | 
| int | bands | ||
| ) | 
Extract bands.
| in | input image | 
| bands | number of bands | 
| void Transform::flip | ( | RawTile & | in, | 
| int | o | ||
| ) | 
Flip image.
| in | input image | 
| o | orientation (0=horizontal,1=vertical) | 
| void Transform::gamma | ( | RawTile & | in, | 
| float | g | ||
| ) | 
Apply a gamma correction.
| in | tile input data | 
| g | gamma | 
| void Transform::greyscale | ( | RawTile & | in | ) | 
Convert image to grayscale.
| in | input image | 
| std::vector<unsigned int> Transform::histogram | ( | RawTile & | in, | 
| const std::vector< float > & | max, | ||
| const std::vector< float > & | min | ||
| ) | 
Calculate histogram of an image.
| in | input image | 
| max | max image values for each channel | 
| min | min image values for each channel | 
| void Transform::interpolate_bilinear | ( | RawTile & | in, | 
| unsigned int | w, | ||
| unsigned int | h | ||
| ) | 
Resize image using bilinear interpolation.
| in | tile input data | 
| w | target width | 
| h | target height | 
| void Transform::interpolate_nearestneighbour | ( | RawTile & | in, | 
| unsigned int | w, | ||
| unsigned int | h | ||
| ) | 
Resize image using nearest neighbour interpolation.
| in | tile input data | 
| w | target width | 
| h | target height | 
| void Transform::inv | ( | RawTile & | in | ) | 
Function to invert colormaps.
| in | tile data to be adjusted | 
| void Transform::LAB2sRGB | ( | RawTile & | in | ) | 
Convert from CIELAB to sRGB colour space.
| in | tile data to be converted | 
| void Transform::normalize | ( | RawTile & | in, | 
| const std::vector< float > & | max, | ||
| const std::vector< float > & | min | ||
| ) | 
Function to create normalized array.
| in | tile data to be adjusted | 
| min | : vector of minima | 
| max | : vector of maxima | 
| void Transform::rotate | ( | RawTile & | in, | 
| float | angle | ||
| ) | 
Rotate image - currently only by 90, 180 or 270 degrees, other values will do nothing.
| in | tile input data | 
| angle | angle of rotation - currently only rotations by 90, 180 and 270 degrees are suported, for other values, no rotation will occur | 
| void Transform::shade | ( | RawTile & | in, | 
| int | h_angle, | ||
| int | v_angle | ||
| ) | 
Hillshading function to simulate raking light images.
| in | tile input data containing normal vectors at each point | 
| h_angle | angle in the horizontal plane from 12 o'clock in degrees | 
| v_angle | angle in the vertical plane in degrees. 0 is flat, 90 pointing directly down. | 
| unsigned char Transform::threshold | ( | std::vector< unsigned int > & | histogram | ) | 
Calculate threshold for binary (bi-level) segmentation.
| histogram | image histogram | 
| void Transform::twist | ( | RawTile & | in, | 
| const std::vector< std::vector< float > > & | ctw | ||
| ) | 
Apply a color twist.
| in | input image | 
| ctw | 2D color twist matrix |