org.bytedeco.javacpp

Class opencv_structured_light.GrayCodePattern

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.javacpp.opencv_core.Algorithm

org.bytedeco.javacpp.opencv_structured_light.StructuredLightPattern

org.bytedeco.javacpp.opencv_structured_light.GrayCodePattern

All Implemented Interfaces:

AutoCloseable

Enclosing class:

opencv_structured_light

@Namespace(value="cv::structured_light")
public static class opencv_structured_light.GrayCodePattern
extends opencv_structured_light.StructuredLightPattern

\addtogroup structured_light \{

/** \brief Class implementing the Gray-code pattern, based on \cite UNDERWORLD. The generation of the pattern images is performed with Gray encoding using the traditional white and black colors. The information about the two image axes x, y is encoded separately into two different pattern sequences. A projector P with resolution (P_res_x, P_res_y) will result in Ncols = log 2 (P_res_x) encoded pattern images representing the columns, and in Nrows = log 2 (P_res_y) encoded pattern images representing the rows. For example a projector with resolution 1024x768 will result in Ncols = 10 and Nrows = 10.

However, the generated pattern sequence consists of both regular color and color-inverted images: inverted pattern images are images with the same structure as the original but with inverted colors. This provides an effective method for easily determining the intensity value of each pixel when it is lit (highest value) and when it is not lit (lowest value). So for a a projector with resolution 1024x768, the number of pattern images will be Ncols * 2 + Nrows * 2 = 40.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	opencv_structured_light.GrayCodePattern.Params \brief Parameters of StructuredLightPattern constructor.

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

org.bytedeco.javacpp.Pointer.CustomDeallocator, org.bytedeco.javacpp.Pointer.Deallocator, org.bytedeco.javacpp.Pointer.NativeDeallocator

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
GrayCodePattern(org.bytedeco.javacpp.Pointer p) Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
static opencv_structured_light.GrayCodePattern	create()
static opencv_structured_light.GrayCodePattern	create(int width, int height)
static opencv_structured_light.GrayCodePattern	create(opencv_structured_light.GrayCodePattern.Params parameters) \brief Constructor
void	getImagesForShadowMasks(opencv_core.GpuMat blackImage, opencv_core.GpuMat whiteImage)
void	getImagesForShadowMasks(opencv_core.Mat blackImage, opencv_core.Mat whiteImage) \brief Generates the all-black and all-white images needed for shadowMasks computation.
void	getImagesForShadowMasks(opencv_core.UMat blackImage, opencv_core.UMat whiteImage)
long	getNumberOfPatternImages() \brief Get the number of pattern images needed for the graycode pattern.
boolean	getProjPixel(opencv_core.GpuMatVector patternImages, int x, int y, opencv_core.Point projPix)
boolean	getProjPixel(opencv_core.MatVector patternImages, int x, int y, opencv_core.Point projPix) \brief For a (x,y) pixel of a camera returns the corresponding projector pixel.
boolean	getProjPixel(opencv_core.UMatVector patternImages, int x, int y, opencv_core.Point projPix)
void	setBlackThreshold(long value) \brief Sets the value for black threshold, needed for decoding (shadowsmasks computation).
void	setWhiteThreshold(long value) \brief Sets the value for white threshold, needed for decoding.

Methods inherited from class org.bytedeco.javacpp.opencv_structured_light.StructuredLightPattern

decode, decode, decode, decode, decode, decode, decode, decode, decode, decode, decode, decode, generate, generate, generate

Methods inherited from class org.bytedeco.javacpp.opencv_core.Algorithm

clear, empty, getDefaultName, position, read, save, save, write, write, write

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, hashCode, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, parseBytes, physicalBytes, position, put, realloc, setNull, sizeof, toString, totalBytes, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

GrayCodePattern

public GrayCodePattern(org.bytedeco.javacpp.Pointer p)

Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

Method Detail

create

@opencv_core.Ptr
public static opencv_structured_light.GrayCodePattern create(@Const @ByRef(nullValue="cv::structured_light::GrayCodePattern::Params()")
                                                                              opencv_structured_light.GrayCodePattern.Params parameters)

\brief Constructor

Parameters:

parameters - GrayCodePattern parameters GrayCodePattern::Params: the width and the height of the projector.

create

@opencv_core.Ptr
public static opencv_structured_light.GrayCodePattern create()

create

@opencv_core.Ptr
public static opencv_structured_light.GrayCodePattern create(int width,
                                                                              int height)

getNumberOfPatternImages

@Cast(value="size_t")
public long getNumberOfPatternImages()

\brief Get the number of pattern images needed for the graycode pattern.

Returns:

The number of pattern images needed for the graycode pattern.

setWhiteThreshold

public void setWhiteThreshold(@Cast(value="size_t")
                              long value)

\brief Sets the value for white threshold, needed for decoding. White threshold is a number between 0-255 that represents the minimum brightness difference required for valid pixels, between the graycode pattern and its inverse images; used in getProjPixel method.

Parameters:

value - The desired white threshold value.

setBlackThreshold

public void setBlackThreshold(@Cast(value="size_t")
                              long value)

\brief Sets the value for black threshold, needed for decoding (shadowsmasks computation). Black threshold is a number between 0-255 that represents the minimum brightness difference required for valid pixels, between the fully illuminated (white) and the not illuminated images (black); used in computeShadowMasks method.

Parameters:

value - The desired black threshold value.

getImagesForShadowMasks

public void getImagesForShadowMasks(@ByVal
                                    opencv_core.Mat blackImage,
                                    @ByVal
                                    opencv_core.Mat whiteImage)

\brief Generates the all-black and all-white images needed for shadowMasks computation. To identify shadow regions, the regions of two images where the pixels are not lit by projector's light and thus where there is not coded information, the 3DUNDERWORLD algorithm computes a shadow mask for the two cameras views, starting from a white and a black images captured by each camera. This method generates these two additional images to project.

Parameters:

blackImage - The generated all-black CV_8U image, at projector's resolution.

whiteImage - The generated all-white CV_8U image, at projector's resolution.

getImagesForShadowMasks

public void getImagesForShadowMasks(@ByVal
                                    opencv_core.UMat blackImage,
                                    @ByVal
                                    opencv_core.UMat whiteImage)

getImagesForShadowMasks

public void getImagesForShadowMasks(@ByVal
                                    opencv_core.GpuMat blackImage,
                                    @ByVal
                                    opencv_core.GpuMat whiteImage)

getProjPixel

@Cast(value="bool")
public boolean getProjPixel(@ByVal
                                                opencv_core.MatVector patternImages,
                                                int x,
                                                int y,
                                                @ByRef
                                                opencv_core.Point projPix)

\brief For a (x,y) pixel of a camera returns the corresponding projector pixel. The function decodes each pixel in the pattern images acquired by a camera into their corresponding decimal numbers representing the projector's column and row, providing a mapping between camera's and projector's pixel.

Parameters:

patternImages - The pattern images acquired by the camera, stored in a grayscale vector < Mat >.

x - x coordinate of the image pixel.

y - y coordinate of the image pixel.

projPix - Projector's pixel corresponding to the camera's pixel: projPix.x and projPix.y are the image coordinates of the projector's pixel corresponding to the pixel being decoded in a camera.

getProjPixel

@Cast(value="bool")
public boolean getProjPixel(@ByVal
                                                opencv_core.UMatVector patternImages,
                                                int x,
                                                int y,
                                                @ByRef
                                                opencv_core.Point projPix)

getProjPixel

@Cast(value="bool")
public boolean getProjPixel(@ByVal
                                                opencv_core.GpuMatVector patternImages,
                                                int x,
                                                int y,
                                                @ByRef
                                                opencv_core.Point projPix)