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//##########################################################################
//# #
//# CLOUDCOMPARE #
//# #
//# This program is free software; you can redistribute it and/or modify #
//# it under the terms of the GNU General Public License as published by #
//# the Free Software Foundation; version 2 or later of the License. #
//# #
//# This program is distributed in the hope that it will be useful, #
//# but WITHOUT ANY WARRANTY; without even the implied warranty of #
//# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
//# GNU General Public License for more details. #
//# #
//# COPYRIGHT: EDF R&D / TELECOM ParisTech (ENST-TSI) #
//# #
//##########################################################################
#include "ccDepthBuffer.h"
//algorithm
#include <vector>
#include <string.h>
ccDepthBuffer::ccDepthBuffer()
: deltaPhi(0)
, deltaTheta(0)
, width(0)
, height(0)
{
}
void ccDepthBuffer::clear()
{
zBuff.resize(0);
width = height = 0;
deltaPhi = deltaTheta = 0;
}
ccDepthBuffer::~ccDepthBuffer()
{
clear();
}
int ccDepthBuffer::fillHoles()
{
if (zBuff.empty())
{
//z-buffer not initialized!
return -1;
}
//new temp buffer
int dx = width + 2;
int dy = height + 2;
unsigned tempZBuffSize = dx*dy;
std::vector<PointCoordinateType> zBuffTemp;
try
{
zBuffTemp.resize(tempZBuffSize);
}
catch (const std::bad_alloc&)
{
//not enough memory
return -2;
}
//copy old zBuffer in temp one (with 1 pixel border)
{
PointCoordinateType *_zBuffTemp = zBuffTemp.data() + (dx + 1); //2nd line, 2nd column
const PointCoordinateType *_zBuff = zBuff.data(); //first line, first column of the true buffer
for (unsigned y = 0; y < height; ++y)
{
memcpy(_zBuffTemp, _zBuff, width * sizeof(PointCoordinateType));
_zBuffTemp += dx;
_zBuff += width;
}
}
//fill holes with their neighbor's mean value
{
for (unsigned y = 0; y < height; ++y)
{
const PointCoordinateType* zu = zBuffTemp.data() + y*dx;
const PointCoordinateType* z = zu + dx;
const PointCoordinateType* zd = z + dx;
for (unsigned x = 0; x < width; ++x, ++zu, ++z, ++zd)
{
if (z[1] == 0) //hole
{
unsigned char nsup = 0; //non empty holes
//upper line
nsup += (zu[0] > 0);
nsup += (zu[1] > 0);
nsup += (zu[2] > 0);
//current line
nsup += ( z[0] > 0);
nsup += ( z[2] > 0);
//next line
nsup += (zd[0] > 0);
nsup += (zd[1] > 0);
nsup += (zd[2] > 0);
if (nsup > 3)
{
zBuff[x + y*width] = (zu[0] + zu[1] + zu[2] + z[0] + z[2] + zd[0] + zd[1] + zd[2]) / nsup;
}
}
}
}
}
return 0;
}
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