/// <summary>
/// calculate the position of the robots head and cameras for this pose
/// </summary>
/// <param name="rob">robot object</param>
/// <param name="head_location">location of the centre of the head</param>
/// <param name="camera_centre_location">location of the centre of each stereo camera</param>
/// <param name="left_camera_location">location of the left camera within each stereo camera</param>
/// <param name="right_camera_location">location of the right camera within each stereo camera</param>
protected void calculateCameraPositions(
robot rob,
ref pos3D head_location,
ref pos3D[] camera_centre_location,
ref pos3D[] left_camera_location,
ref pos3D[] right_camera_location)
{
// calculate the position of the centre of the head relative to
// the centre of rotation of the robots body
pos3D head_centroid = new pos3D(-(rob.BodyWidth_mm / 2) + rob.head.x,
-(rob.BodyLength_mm / 2) + rob.head.y,
rob.head.z);
// location of the centre of the head on the grid map
// adjusted for the robot pose and the head pan and tilt angle.
// Note that the positions and orientations of individual cameras
// on the head have already been accounted for within stereoModel.createObservation
pos3D head_locn = head_centroid.rotate(rob.head.pan + pan, rob.head.tilt, 0);
head_locn = head_locn.translate(x, y, 0);
head_location.copyFrom(head_locn);
for (int cam = 0; cam < rob.head.no_of_stereo_cameras; cam++)
{
// calculate the position of the centre of the stereo camera
// (baseline centre point)
pos3D camera_centre_locn = new pos3D(rob.head.calibration[cam].positionOrientation.x, rob.head.calibration[cam].positionOrientation.y, rob.head.calibration[cam].positionOrientation.y);
camera_centre_locn = camera_centre_locn.rotate(rob.head.calibration[cam].positionOrientation.pan + rob.head.pan + pan, rob.head.calibration[cam].positionOrientation.tilt, rob.head.calibration[cam].positionOrientation.roll);
camera_centre_location[cam] = camera_centre_locn.translate(head_location.x, head_location.y, head_location.z);
// where are the left and right cameras?
// we need to know this for the origins of the vacancy models
float half_baseline_length = rob.head.calibration[cam].baseline / 2;
pos3D left_camera_locn = new pos3D(-half_baseline_length, 0, 0);
left_camera_locn = left_camera_locn.rotate(rob.head.calibration[cam].positionOrientation.pan + rob.head.pan + pan, rob.head.calibration[cam].positionOrientation.tilt, rob.head.calibration[cam].positionOrientation.roll);
pos3D right_camera_locn = new pos3D(-left_camera_locn.x, -left_camera_locn.y, -left_camera_locn.z);
left_camera_location[cam] = left_camera_locn.translate(camera_centre_location[cam].x, camera_centre_location[cam].y, camera_centre_location[cam].z);
right_camera_location[cam] = right_camera_locn.translate(camera_centre_location[cam].x, camera_centre_location[cam].y, camera_centre_location[cam].z);
right_camera_location[cam].pan = left_camera_location[cam].pan;
}
}
public void InsertRays()
{
int no_of_stereo_features = 2000;
int image_width = 640;
int image_height = 480;
int no_of_stereo_cameras = 1;
int localisationRadius_mm = 16000;
int maxMappingRange_mm = 16000;
int cellSize_mm = 32;
int dimension_cells = 16000 / cellSize_mm;
int dimension_cells_vertical = dimension_cells/2;
float vacancyWeighting = 0.5f;
float FOV_horizontal = 78 * (float)Math.PI / 180.0f;
// create a grid
Console.WriteLine("Creating grid");
occupancygridSimple grid =
new occupancygridSimple(
dimension_cells,
dimension_cells_vertical,
cellSize_mm,
localisationRadius_mm,
maxMappingRange_mm,
vacancyWeighting);
Assert.AreNotEqual(grid, null, "object occupancygridSimple was not created");
Console.WriteLine("Creating sensor models");
stereoModel inverseSensorModel = new stereoModel();
inverseSensorModel.FOV_horizontal = FOV_horizontal;
inverseSensorModel.FOV_vertical = FOV_horizontal * image_height / image_width;
inverseSensorModel.createLookupTable(cellSize_mm, image_width, image_height);
//Assert.AreNotEqual(0, inverseSensorModel.ray_model.probability[1][5], "Ray model probabilities not updated");
// observer parameters
int pan_angle_degrees = 0;
pos3D observer = new pos3D(0,0,0);
observer.pan = pan_angle_degrees * (float)Math.PI / 180.0f;
float stereo_camera_baseline_mm = 100;
pos3D left_camera_location = new pos3D(stereo_camera_baseline_mm*0.5f,0,0);
pos3D right_camera_location = new pos3D(-stereo_camera_baseline_mm*0.5f,0,0);
left_camera_location = left_camera_location.rotate(observer.pan, observer.tilt, observer.roll);
right_camera_location = right_camera_location.rotate(observer.pan, observer.tilt, observer.roll);
left_camera_location = left_camera_location.translate(observer.x, observer.y, observer.z);
right_camera_location = right_camera_location.translate(observer.x, observer.y, observer.z);
float FOV_degrees = 78;
float[] stereo_features = new float[no_of_stereo_features * 3];
byte[,] stereo_features_colour = new byte[no_of_stereo_features, 3];
float[] stereo_features_uncertainties = new float[no_of_stereo_features];
// create some stereo disparities within the field of view
Console.WriteLine("Adding disparities");
//MersenneTwister rnd = new MersenneTwister(0);
Random rnd = new Random(0);
for (int correspondence = 0; correspondence < no_of_stereo_features; correspondence++)
{
float x = rnd.Next(image_width-1);
float y = rnd.Next(image_height/50) + (image_height/2);
float disparity = 7;
if ((x < image_width/5) || (x > image_width * 4/5))
{
disparity = 7; //15;
}
byte colour_red = (byte)rnd.Next(255);
byte colour_green = (byte)rnd.Next(255);
byte colour_blue = (byte)rnd.Next(255);
stereo_features[correspondence*3] = x;
stereo_features[(correspondence*3)+1] = y;
stereo_features[(correspondence*3)+2] = disparity;
stereo_features_colour[correspondence, 0] = colour_red;
stereo_features_colour[correspondence, 1] = colour_green;
stereo_features_colour[correspondence, 2] = colour_blue;
stereo_features_uncertainties[correspondence] = 0;
}
// create an observation as a set of rays from the stereo correspondence results
List<evidenceRay>[] stereo_rays = new List<evidenceRay>[no_of_stereo_cameras];
for (int cam = 0; cam < no_of_stereo_cameras; cam++)
{
Console.WriteLine("Creating rays");
stereo_rays[cam] =
inverseSensorModel.createObservation(
observer,
stereo_camera_baseline_mm,
image_width,
image_height,
FOV_degrees,
stereo_features,
stereo_features_colour,
stereo_features_uncertainties,
true);
// insert rays into the grid
Console.WriteLine("Throwing rays");
for (int ray = 0; ray < stereo_rays[cam].Count; ray++)
{
grid.Insert(stereo_rays[cam][ray], inverseSensorModel.ray_model, left_camera_location, right_camera_location, false);
}
}
// save the result as an image
Console.WriteLine("Saving grid");
int debug_img_width = 640;
int debug_img_height = 480;
byte[] debug_img = new byte[debug_img_width * debug_img_height * 3];
Bitmap bmp = new Bitmap(debug_img_width, debug_img_height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
grid.Show(debug_img, debug_img_width, debug_img_height, false, false);
BitmapArrayConversions.updatebitmap_unsafe(debug_img, bmp);
bmp.Save("tests_occupancygrid_simple_InsertRays_overhead.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
grid.ShowFront(debug_img, debug_img_width, debug_img_height, true);
BitmapArrayConversions.updatebitmap_unsafe(debug_img, bmp);
bmp.Save("tests_occupancygrid_simple_InsertRays_front.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
// side view of the probabilities
float max_prob = -1;
float min_prob = 1;
float[] probs = new float[dimension_cells/2];
float[] mean_colour = new float[3];
for (int y = dimension_cells / 2; y < dimension_cells; y++)
{
float p = grid.GetProbability(dimension_cells / 2, y, mean_colour);
probs[y - (dimension_cells / 2)] = p;
if (p != occupancygridSimple.NO_OCCUPANCY_EVIDENCE)
{
if (p < min_prob) min_prob = p;
if (p > max_prob) max_prob = p;
}
}
for (int i = 0; i < debug_img.Length; i++) debug_img[i] = 255;
int prev_x = -1;
int prev_y = debug_img_height / 2;
for (int i = 0; i < probs.Length; i++)
{
if (probs[i] != occupancygridSimple.NO_OCCUPANCY_EVIDENCE)
{
int x = i * (debug_img_width - 1) / probs.Length;
int y = debug_img_height - 1 - (int)((probs[i] - min_prob) / (max_prob - min_prob) * (debug_img_height - 1));
int n = ((y * debug_img_width) + x) * 3;
if (prev_x > -1)
{
int r = 255;
int g = 0;
int b = 0;
if (probs[i] > 0.5f)
{
r = 0;
g = 255;
b = 0;
}
drawing.drawLine(debug_img, debug_img_width, debug_img_height, prev_x, prev_y, x, y, r, g, b, 0, false);
}
prev_x = x;
prev_y = y;
}
}
int y_zero = debug_img_height - 1 - (int)((0.5f-min_prob) / (max_prob - min_prob) * (debug_img_height - 1));
drawing.drawLine(debug_img, debug_img_width, debug_img_height, 0, y_zero, debug_img_width - 1, y_zero, 0, 0, 0, 0, false);
BitmapArrayConversions.updatebitmap_unsafe(debug_img, bmp);
bmp.Save("tests_occupancygrid_simple_InsertRays_probs.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
}
/// <summary>
/// Calculate the position of the robots head and cameras for this pose
/// the positions returned are relative to the robots centre of rotation
/// </summary>
/// <param name="body_width_mm">width of the robot body in millimetres</param>
/// <param name="body_length_mm">length of the robot body in millimetres</param>
/// <param name="body_centre_of_rotation_x">x centre of rotation of the robot, relative to the top left corner</param>
/// <param name="body_centre_of_rotation_y">y centre of rotation of the robot, relative to the top left corner</param>
/// <param name="body_centre_of_rotation_z">z centre of rotation of the robot, relative to the top left corner</param>
/// <param name="head_centroid_x">head centroid x position in millimetres relative to the top left corner of the body</param>
/// <param name="head_centroid_y">head centroid y position in millimetres relative to the top left corner of the body</param>
/// <param name="head_centroid_z">head centroid z position in millimetres relative to the top left corner of the body</param>
/// <param name="head_pan">head pan angle in radians</param>
/// <param name="head_tilt">head tilt angle in radians</param>
/// <param name="head_roll">head roll angle in radians</param>
/// <param name="baseline_mm">stereo camera baseline in millimetres</param>
/// <param name="stereo_camera_position_x">stereo camera x position in millimetres relative to the head centroid</param>
/// <param name="stereo_camera_position_y">stereo camera y position in millimetres relative to the head centroid</param>
/// <param name="stereo_camera_position_z">stereo camera z position in millimetres relative to the head centroid</param>
/// <param name="stereo_camera_pan">stereo camera pan in radians relative to the head</param>
/// <param name="stereo_camera_tilt">stereo camera tilt in radians relative to the head</param>
/// <param name="stereo_camera_roll">stereo camera roll in radians relative to the head</param>
/// <param name="head_location">returned location/orientation of the robot head</param>
/// <param name="camera_centre_location">returned stereo camera centre position/orientation</param>
/// <param name="left_camera_location">returned left camera position/orientation</param>
/// <param name="right_camera_location">returned right camera position/orientation</param>
public static void calculateCameraPositions(
float body_width_mm,
float body_length_mm,
float body_centre_of_rotation_x,
float body_centre_of_rotation_y,
float body_centre_of_rotation_z,
float head_centroid_x,
float head_centroid_y,
float head_centroid_z,
float head_pan,
float head_tilt,
float head_roll,
float baseline_mm,
float stereo_camera_position_x,
float stereo_camera_position_y,
float stereo_camera_position_z,
float stereo_camera_pan,
float stereo_camera_tilt,
float stereo_camera_roll,
ref pos3D head_location,
ref pos3D camera_centre_location,
ref pos3D left_camera_location,
ref pos3D right_camera_location)
{
// calculate the position of the centre of the head relative to
// the centre of rotation of the robots body
pos3D head_centroid =
new pos3D(
-(body_width_mm * 0.5f) + (body_centre_of_rotation_x - (body_width_mm * 0.5f)) + head_centroid_x,
-(body_length_mm * 0.5f) + (body_centre_of_rotation_y - (body_length_mm * 0.5f)) + head_centroid_y,
head_centroid_z);
// location of the centre of the head
// adjusted for the robot pose and the head pan and tilt angle.
// Note that the positions and orientations of individual cameras
// on the head have already been accounted for within stereoModel.createObservation
pos3D head_locn =
head_centroid.rotate(
head_pan, head_tilt, 0);
head_location.copyFrom(head_locn);
// calculate the position of the centre of the stereo camera
// (baseline centre point)
pos3D camera_centre_locn =
new pos3D(
stereo_camera_position_x,
stereo_camera_position_y,
stereo_camera_position_z);
// rotate the stereo camera
camera_centre_locn =
camera_centre_locn.rotate(
stereo_camera_pan + head_pan,
stereo_camera_tilt + head_tilt,
stereo_camera_roll + head_roll);
// move the stereo camera relative to the head position
camera_centre_location =
camera_centre_locn.translate(
head_location.x,
head_location.y,
head_location.z);
// where are the left and right cameras?
// we need to know this for the origins of the vacancy models
float half_baseline_length = baseline_mm * 0.5f;
pos3D left_camera_locn = new pos3D(-half_baseline_length, 0, 0);
left_camera_locn = left_camera_locn.rotate(stereo_camera_pan + head_pan, stereo_camera_tilt + head_tilt, stereo_camera_roll + head_roll);
pos3D right_camera_locn = new pos3D(-left_camera_locn.x, -left_camera_locn.y, -left_camera_locn.z);
left_camera_location = left_camera_locn.translate(camera_centre_location.x, camera_centre_location.y, camera_centre_location.z);
right_camera_location = right_camera_locn.translate(camera_centre_location.x, camera_centre_location.y, camera_centre_location.z);
right_camera_location.pan = left_camera_location.pan;
}
/// <summary>
/// calculate the position of the robots head and cameras for this pose
/// </summary>
/// <param name="rob">robot object</param>
/// <param name="head_location">location of the centre of the head</param>
/// <param name="camera_centre_location">location of the centre of each stereo camera</param>
/// <param name="left_camera_location">location of the left camera within each stereo camera</param>
/// <param name="right_camera_location">location of the right camera within each stereo camera</param>
protected void calculateCameraPositions(
robot rob,
ref pos3D head_location,
ref pos3D[] camera_centre_location,
ref pos3D[] left_camera_location,
ref pos3D[] right_camera_location)
{
// calculate the position of the centre of the head relative to
// the centre of rotation of the robots body
pos3D head_centroid = new pos3D(-(rob.BodyWidth_mm / 2) + rob.head.x,
-(rob.BodyLength_mm / 2) + rob.head.y,
rob.head.z);
// location of the centre of the head on the grid map
// adjusted for the robot pose and the head pan and tilt angle.
// Note that the positions and orientations of individual cameras
// on the head have already been accounted for within stereoModel.createObservation
pos3D head_locn = head_centroid.rotate(rob.head.pan + pan, rob.head.tilt, 0);
head_locn = head_locn.translate(x, y, 0);
head_location.copyFrom(head_locn);
for (int cam = 0; cam < rob.head.no_of_stereo_cameras; cam++)
{
// calculate the position of the centre of the stereo camera
// (baseline centre point)
pos3D camera_centre_locn = new pos3D(rob.head.calibration[cam].positionOrientation.x, rob.head.calibration[cam].positionOrientation.y, rob.head.calibration[cam].positionOrientation.y);
camera_centre_locn = camera_centre_locn.rotate(rob.head.calibration[cam].positionOrientation.pan + rob.head.pan + pan, rob.head.calibration[cam].positionOrientation.tilt, rob.head.calibration[cam].positionOrientation.roll);
camera_centre_location[cam] = camera_centre_locn.translate(head_location.x, head_location.y, head_location.z);
// where are the left and right cameras?
// we need to know this for the origins of the vacancy models
float half_baseline_length = rob.head.calibration[cam].baseline / 2;
pos3D left_camera_locn = new pos3D(-half_baseline_length, 0, 0);
left_camera_locn = left_camera_locn.rotate(rob.head.calibration[cam].positionOrientation.pan + rob.head.pan + pan, rob.head.calibration[cam].positionOrientation.tilt, rob.head.calibration[cam].positionOrientation.roll);
pos3D right_camera_locn = new pos3D(-left_camera_locn.x, -left_camera_locn.y, -left_camera_locn.z);
left_camera_location[cam] = left_camera_locn.translate(camera_centre_location[cam].x, camera_centre_location[cam].y, camera_centre_location[cam].z);
right_camera_location[cam] = right_camera_locn.translate(camera_centre_location[cam].x, camera_centre_location[cam].y, camera_centre_location[cam].z);
right_camera_location[cam].pan = left_camera_location[cam].pan;
}
}
/// <summary>
/// Calculate the position of the robots head and cameras for this pose
/// the positions returned are relative to the robots centre of rotation
/// </summary>
/// <param name="body_width_mm">width of the robot body in millimetres</param>
/// <param name="body_length_mm">length of the robot body in millimetres</param>
/// <param name="body_centre_of_rotation_x">x centre of rotation of the robot, relative to the top left corner</param>
/// <param name="body_centre_of_rotation_y">y centre of rotation of the robot, relative to the top left corner</param>
/// <param name="body_centre_of_rotation_z">z centre of rotation of the robot, relative to the top left corner</param>
/// <param name="head_centroid_x">head centroid x position in millimetres relative to the top left corner of the body</param>
/// <param name="head_centroid_y">head centroid y position in millimetres relative to the top left corner of the body</param>
/// <param name="head_centroid_z">head centroid z position in millimetres relative to the top left corner of the body</param>
/// <param name="head_pan">head pan angle in radians</param>
/// <param name="head_tilt">head tilt angle in radians</param>
/// <param name="head_roll">head roll angle in radians</param>
/// <param name="baseline_mm">stereo camera baseline in millimetres</param>
/// <param name="stereo_camera_position_x">stereo camera x position in millimetres relative to the head centroid</param>
/// <param name="stereo_camera_position_y">stereo camera y position in millimetres relative to the head centroid</param>
/// <param name="stereo_camera_position_z">stereo camera z position in millimetres relative to the head centroid</param>
/// <param name="stereo_camera_pan">stereo camera pan in radians relative to the head</param>
/// <param name="stereo_camera_tilt">stereo camera tilt in radians relative to the head</param>
/// <param name="stereo_camera_roll">stereo camera roll in radians relative to the head</param>
/// <param name="head_location">returned location/orientation of the robot head</param>
/// <param name="camera_centre_location">returned stereo camera centre position/orientation</param>
/// <param name="left_camera_location">returned left camera position/orientation</param>
/// <param name="right_camera_location">returned right camera position/orientation</param>
public static void calculateCameraPositions(
float body_width_mm,
float body_length_mm,
float body_centre_of_rotation_x,
float body_centre_of_rotation_y,
float body_centre_of_rotation_z,
float head_centroid_x,
float head_centroid_y,
float head_centroid_z,
float head_pan,
float head_tilt,
float head_roll,
float baseline_mm,
float stereo_camera_position_x,
float stereo_camera_position_y,
float stereo_camera_position_z,
float stereo_camera_pan,
float stereo_camera_tilt,
float stereo_camera_roll,
ref pos3D head_location,
ref pos3D camera_centre_location,
ref pos3D left_camera_location,
ref pos3D right_camera_location)
{
// calculate the position of the centre of the head relative to
// the centre of rotation of the robots body
pos3D head_centroid =
new pos3D(
-(body_width_mm * 0.5f) + (body_centre_of_rotation_x - (body_width_mm * 0.5f)) + head_centroid_x,
-(body_length_mm * 0.5f) + (body_centre_of_rotation_y - (body_length_mm * 0.5f)) + head_centroid_y,
head_centroid_z);
// location of the centre of the head
// adjusted for the robot pose and the head pan and tilt angle.
// Note that the positions and orientations of individual cameras
// on the head have already been accounted for within stereoModel.createObservation
pos3D head_locn =
head_centroid.rotate(
head_pan, head_tilt, 0);
head_location.copyFrom(head_locn);
// calculate the position of the centre of the stereo camera
// (baseline centre point)
pos3D camera_centre_locn =
new pos3D(
stereo_camera_position_x,
stereo_camera_position_y,
stereo_camera_position_z);
// rotate the stereo camera
camera_centre_locn =
camera_centre_locn.rotate(
stereo_camera_pan + head_pan,
stereo_camera_tilt + head_tilt,
stereo_camera_roll + head_roll);
// move the stereo camera relative to the head position
camera_centre_location =
camera_centre_locn.translate(
head_location.x,
head_location.y,
head_location.z);
// where are the left and right cameras?
// we need to know this for the origins of the vacancy models
float half_baseline_length = baseline_mm * 0.5f;
pos3D left_camera_locn = new pos3D(-half_baseline_length, 0, 0);
left_camera_locn = left_camera_locn.rotate(stereo_camera_pan + head_pan, stereo_camera_tilt + head_tilt, stereo_camera_roll + head_roll);
pos3D right_camera_locn = new pos3D(-left_camera_locn.x, -left_camera_locn.y, -left_camera_locn.z);
left_camera_location = left_camera_locn.translate(camera_centre_location.x, camera_centre_location.y, camera_centre_location.z);
right_camera_location = right_camera_locn.translate(camera_centre_location.x, camera_centre_location.y, camera_centre_location.z);
right_camera_location.pan = left_camera_location.pan;
}
/// <summary>
/// Mapping
/// </summary>
/// <param name="body_width_mm">width of the robot body in millimetres</param>
/// <param name="body_length_mm">length of the robot body in millimetres</param>
/// <param name="body_centre_of_rotation_x">x centre of rotation of the robot, relative to the top left corner</param>
/// <param name="body_centre_of_rotation_y">y centre of rotation of the robot, relative to the top left corner</param>
/// <param name="body_centre_of_rotation_z">z centre of rotation of the robot, relative to the top left corner</param>
/// <param name="head_centroid_x">head centroid x position in millimetres relative to the top left corner of the body</param>
/// <param name="head_centroid_y">head centroid y position in millimetres relative to the top left corner of the body</param>
/// <param name="head_centroid_z">head centroid z position in millimetres relative to the top left corner of the body</param>
/// <param name="head_pan">head pan angle in radians</param>
/// <param name="head_tilt">head tilt angle in radians</param>
/// <param name="head_roll">head roll angle in radians</param>
/// <param name="baseline_mm">stereo camera baseline in millimetres</param>
/// <param name="stereo_camera_position_x">stereo camera x position in millimetres relative to the head centroid</param>
/// <param name="stereo_camera_position_y">stereo camera y position in millimetres relative to the head centroid</param>
/// <param name="stereo_camera_position_z">stereo camera z position in millimetres relative to the head centroid</param>
/// <param name="stereo_camera_pan">stereo camera pan in radians relative to the head</param>
/// <param name="stereo_camera_tilt">stereo camera tilt in radians relative to the head</param>
/// <param name="stereo_camera_roll">stereo camera roll in radians relative to the head</param>
/// <param name="image_width">image width for each stereo camera</param>
/// <param name="image_height">image height for each stereo camera</param>
/// <param name="FOV_degrees">field of view for each stereo camera in degrees</param>
/// <param name="stereo_features">stereo features (disparities) for each stereo camera</param>
/// <param name="stereo_features_colour">stereo feature colours for each stereo camera</param>
/// <param name="stereo_features_uncertainties">stereo feature uncertainties (priors) for each stereo camera</param>
/// <param name="sensormodel">sensor model for each grid level</param>
/// <param name="left_camera_location">returned position and orientation of the left camera on each stereo camera</param>
/// <param name="right_camera_location">returned position and orientation of the right camera on each stereo camera</param>
/// <param name="robot_pose">current estimated position and orientation of the robots centre of rotation</param>
public void Map(
float body_width_mm,
float body_length_mm,
float body_centre_of_rotation_x,
float body_centre_of_rotation_y,
float body_centre_of_rotation_z,
float head_centroid_x,
float head_centroid_y,
float head_centroid_z,
float head_pan,
float head_tilt,
float head_roll,
int stereo_camera_index,
float baseline_mm,
float stereo_camera_position_x,
float stereo_camera_position_y,
float stereo_camera_position_z,
float stereo_camera_pan,
float stereo_camera_tilt,
float stereo_camera_roll,
int image_width,
int image_height,
float FOV_degrees,
float[] stereo_features,
byte[,] stereo_features_colour,
float[] stereo_features_uncertainties,
stereoModel[][] sensormodel,
ref pos3D left_camera_location,
ref pos3D right_camera_location,
pos3D robot_pose)
{
// positions of the left and right camera relative to the robots centre of rotation
pos3D head_location = new pos3D(0, 0, 0);
pos3D camera_centre_location = null;
pos3D relative_left_cam = null;
pos3D relative_right_cam = null;
occupancygridBase.calculateCameraPositions(
body_width_mm,
body_length_mm,
body_centre_of_rotation_x,
body_centre_of_rotation_y,
body_centre_of_rotation_z,
head_centroid_x,
head_centroid_y,
head_centroid_z,
head_pan,
head_tilt,
head_roll,
baseline_mm,
stereo_camera_position_x,
stereo_camera_position_y,
stereo_camera_position_z,
stereo_camera_pan,
stereo_camera_tilt,
stereo_camera_roll,
ref head_location,
ref camera_centre_location,
ref relative_left_cam,
ref relative_right_cam);
left_camera_location = relative_left_cam.translate(robot_pose.x, robot_pose.y, robot_pose.z);
right_camera_location = relative_right_cam.translate(robot_pose.x, robot_pose.y, robot_pose.z);
pos3D stereo_camera_centre = new pos3D(0, 0, 0);
// update the grid
// centre position between the left and right cameras
stereo_camera_centre.x = left_camera_location.x + ((right_camera_location.x - left_camera_location.x) * 0.5f);
stereo_camera_centre.y = left_camera_location.y + ((right_camera_location.y - left_camera_location.y) * 0.5f);
stereo_camera_centre.z = left_camera_location.z + ((right_camera_location.z - left_camera_location.z) * 0.5f);
stereo_camera_centre.pan = robot_pose.pan + head_pan + stereo_camera_pan;
stereo_camera_centre.tilt = robot_pose.tilt + head_tilt + stereo_camera_tilt;
stereo_camera_centre.roll = robot_pose.roll + head_roll + stereo_camera_roll;
// create a set of stereo rays as observed from this pose
List <evidenceRay> rays = sensormodel[stereo_camera_index][0].createObservation(
stereo_camera_centre,
baseline_mm,
image_width,
image_height,
FOV_degrees,
stereo_features,
stereo_features_colour,
stereo_features_uncertainties,
true);
// insert rays into the occupancy grid
for (int r = 0; r < rays.Count; r++)
{
Insert(rays[r], sensormodel[stereo_camera_index], left_camera_location, right_camera_location, false);
}
}
