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CyImage.cpp
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CyImage.cpp
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#include "stdafx.h"
#include "CyImage.h"
#include <new>
#include <algorithm>
using namespace std;
#include "FileIO.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/** - 为8位色图像设置颜色表 - */
void SetColorTabFor8BitImage(CImage *pImage)
{
ASSERT(pImage && !pImage->IsNull() && 8 == pImage->GetBPP());
if (8 != pImage->GetBPP())
return;
RGBQUAD ColorTab[256];
for (int i = 0; i < 256; i++)
{
ColorTab[i].rgbBlue = ColorTab[i].rgbGreen = ColorTab[i].rgbRed = i;
ColorTab[i].rgbReserved = 0;
}
pImage->SetColorTable(0, 256, ColorTab);
}
// 从file path获取file name(默认带后缀)
CString GetFileName(CString strFilePath, BOOL bHasPostfix)
{
int nLength = strFilePath.GetLength();
int nPos = strFilePath.ReverseFind('\\');
CString name = strFilePath.Right(nLength - nPos - 1);
// 获取没有后缀的文件名
if (bHasPostfix == FALSE)
{
int nDotPos = name.ReverseFind('.');
name = name.Left(nDotPos);
}
return name;
}
// 从file path获取file ext
CString GetFileExt(CString strFilePath)
{
int nLength = strFilePath.GetLength();
int nPos = strFilePath.ReverseFind('.');
CString ext = strFilePath.Right(nLength - nPos - 1);
return ext;
}
// 数字转为CString
CString Num2String(int nNum)
{
CString str;
str.Format(_T("%d"), nNum);
return str;
}
#ifdef ENABLE_IMAGE_TRANSFORM
/** 在目标图像挖出一块矩形用源图像替换，LOGO必须大于3通道 */
void ReplacedLogo(CyImage* pDstImage, CyImage* pSrcImage, CLogoRect LogoRect)
{
return MixedLogo(pDstImage, pSrcImage, LogoRect, 0);
}
/** 在目标图像挖出一块矩形与源图像混合，dst_rate指明DstImage所占比例 */
void MixedLogo(CyImage* pDstImage, CyImage* pSrcImage, CLogoRect LogoRect, float dst_rate)
{
// 当中一个为空就返回
if (pSrcImage->IsNull() || pSrcImage->GetWidth() < 23 || pDstImage->IsNull())
return;
// 当Logo太大时返回
if (LogoRect.Width() > pDstImage->GetWidth() || LogoRect.Height() > pDstImage->GetHeight())
return;
ASSERT(pSrcImage->GetChannel() >= 3);
int nDstRowlen = pDstImage->GetFloatDataRowlen();
int nDstChannel = pDstImage->GetChannel();
int nLogoWidth = LogoRect.Width();
int nLogoHeight = LogoRect.Height();
ImageTransform pSrc = pSrcImage->Zoom(nLogoWidth, nLogoHeight, TRUE);
int nSrcChannel = pSrcImage->GetChannel();
int nSrcRowlen = nLogoWidth * nSrcChannel;
float *pDst = pDstImage->GetFloatDataHead();
for (int i = 0; i < nLogoHeight; ++i)
{
float* pRow = pDst + LogoRect.left * nDstChannel + (i + LogoRect.top) * nDstRowlen;
const float* pBits = pSrc.GetImage() + i * nSrcRowlen;
for (int j = 0; j < nLogoWidth; ++j)
{
float* pCur = pRow + j * nDstChannel;
const float* p = pBits + j * nSrcChannel;
pCur[0] = dst_rate * pCur[0] + (1 - dst_rate) * p[0];
pCur[1] = dst_rate * pCur[1] + (1 - dst_rate) * p[1];
pCur[2] = dst_rate * pCur[2] + (1 - dst_rate) * p[2];
}
}
pDstImage->MemcpyFloatToByte();
}
#endif
/** - 默认的构造函数 - */
CyImage::CyImage()
{
CImage::CImage();
m_pFloatData = NULL;
m_fMaximum = 0;
m_fMinimum = 0;
}
/** - 析构函数 - */
CyImage::~CyImage()
{
SAFE_DELETE(m_pFloatData);
CImage::~CImage();
}
/** - 拷贝构造函数 - */
CyImage::CyImage(const CyImage &pImage)
{
m_pFloatData = NULL;
m_fMaximum = 0;
m_fMinimum = 0;
BOOL nRet = Create(pImage.GetWidth(), pImage.GetHeight(), pImage.GetBPP(), 0);
ASSERT(nRet);
float *pDst = GetFloatDataHead();
float *pSrc = pImage.GetFloatDataHead();
memcpy(pDst, pSrc, GetHeight() * GetFloatDataRowlen() * sizeof(float));
MemcpyFloatToByte();
}
/** - 赋值操作运算 - */
CyImage CyImage::operator = (const CyImage &pImage)
{
// 自己给自己赋值
if (&pImage == this)
return *this;
Destroy();
m_pFloatData = NULL;
m_fMaximum = 0;
m_fMinimum = 0;
BOOL nRet = Create(pImage.GetWidth(), pImage.GetHeight(), pImage.GetBPP(), 0);
ASSERT(nRet);
float *pDst = GetFloatDataHead();
float *pSrc = pImage.GetFloatDataHead();
memcpy(pDst, pSrc, GetHeight() * GetFloatDataRowlen() * sizeof(float));
MemcpyFloatToByte();
return *this;
}
/** - 获取浮点数据的头指针 - */
float* CyImage::GetFloatDataHead() const
{
return m_pFloatData;
}
/** - 获取图像每行浮点数据个数 - */
int CyImage::GetFloatDataRowlen() const
{
return GetWidth() * GetChannel();
}
/** - 为图像拷贝浮点数据 -
* @param[in] *pSrc 数据源
* @param[in] nRowlen 数据源每行浮点个数
* @param[in] nHeight 数据源的高度
* @return 真或假
*/
BOOL CyImage::SetFloatData(float* pSrc, int nRowlen, int nHeight)
{
if (m_pFloatData == NULL || nRowlen != GetFloatDataRowlen() || nHeight != GetHeight())
return FALSE;
memcpy(m_pFloatData, pSrc, nRowlen * nHeight * sizeof(float));
return TRUE;
}
/** - 获取浮点数据的最大值 - */
float CyImage::GetMaximum() const
{
return m_fMaximum;
}
/** - 获取浮点数据的最小值 - */
float CyImage::GetMinimum() const
{
return m_fMinimum;
}
/** - 计算浮点数据的最大、最小值 - */
void CyImage::ComputeMinMax()
{
// 寻找最大最小值
pair<float*, float*> minmax_pair = minmax_element(m_pFloatData,
m_pFloatData + GetHeight() * GetFloatDataRowlen());
m_fMinimum = *minmax_pair.first;
m_fMaximum = *minmax_pair.second;
}
/** - 获得图像数据块的首地址 - */
BYTE* CyImage::GetHeadAddress() const
{
return (BYTE*) GetBits() + GetPitch() * (GetHeight() - 1);
}
/** - 获得图像某一行的首地址 - */
BYTE* CyImage::GetLineAddress(int nLineID) const
{
return GetHeadAddress() + nLineID * abs(GetPitch());
}
/** - 获得图像的通道个数 - */
int CyImage::GetChannel() const
{
return GetBPP() / 8;
}
/** - 获得图像数据每行的字节数 - */
int CyImage::GetRowlen() const
{
return abs(GetPitch());
}
/** - 获得图像数据总的字节数 - */
int CyImage::GetLength() const
{
return GetHeight() * abs(GetPitch());
}
/** - 获得图像的对角线的长度 - */
int CyImage::GetDiagLength() const
{
return (int)ceil(sqrt(1.0f * GetWidth() * GetWidth() + GetHeight() * GetHeight()));
}
/** - 获得图像的宽度、高度 - */
void CyImage::GetInfomation(int &nWidth, int &nHeight) const
{
nWidth = GetWidth();
nHeight = GetHeight();
}
/** - 获得图像的宽度、高度、每行字节数 - */
void CyImage::GetInfomation(int &nWidth, int &nHeight, int &nRowlen) const
{
nWidth = GetWidth();
nHeight = GetHeight();
nRowlen = abs(GetPitch());
}
/** - 获得图像的宽度、高度、每行字节数、每像素字节数 - */
void CyImage::GetInfomation(int &nWidth, int &nHeight, int &nRowlen, int &nBPP) const
{
nWidth = GetWidth();
nHeight = GetHeight();
nRowlen = abs(GetPitch());
nBPP = GetBPP();
}
/** - 获得图像的宽度、高度、每行字节数、每像素字节数、通道个数 - */
void CyImage::GetInfomation(int &nWidth, int &nHeight, int &nRowlen, int &nBPP, int &nChannel) const
{
nWidth = GetWidth();
nHeight = GetHeight();
nRowlen = abs(GetPitch());
nBPP = GetBPP();
nChannel = nBPP / 8;
}
/** - 初始化浮点数据 - */
BOOL CyImage::InitFloatData()
{
SAFE_DELETE(m_pFloatData);
int nHeight = GetHeight();
int nRowlen = GetFloatDataRowlen();
try
{
m_pFloatData = new float[nHeight * nRowlen];
}
catch (const std::bad_alloc)
{
return FALSE;
}
memset(m_pFloatData, 0, nHeight * nRowlen * sizeof(float));
return TRUE;
}
/** - 拷贝数据源创建图像 -
* @param[in] *pSrc 源数据
* @param[in] nWidth 图像宽度
* @param[in] nHeight 图像高度
* @param[in] nBPP 位深度
* @return 成功或失败
* @note pSrc的数据长度务必与所创建图像字节数一致，即:
length(pSrc) = 所创建的图像总的字节数
*/
BOOL CyImage::Create(const BYTE* pSrc, int nWidth, int nHeight, int nBPP) throw()
{
Destroy();// 先销毁图像数据
if (FALSE == CImage::Create(nWidth, nHeight, nBPP, 0UL))
return FALSE;
if (nBPP == 8)
SetColorTabFor8BitImage(this);
memcpy(GetHeadAddress(), pSrc, GetLength() * sizeof(BYTE));
InitFloatData();
MemcpyByteToFloat();
return TRUE;
}
/** - 创建图像 -
* @param[in] nWidth 图像宽度
* @param[in] nHeight 图像高度
* @param[in] nBPP 图像位深度
* @param[in] dwFlags 图像初值
* @return 成功或失败
*/
BOOL CyImage::Create(int nWidth, int nHeight, int nBPP, DWORD dwFlags) throw()
{
Destroy();
if (FALSE == CImage::Create(nWidth, nHeight, nBPP, dwFlags))
return FALSE;
if (nBPP == 8)
SetColorTabFor8BitImage(this);
InitFloatData();
MemcpyByteToFloat();
return TRUE;
}
/** - 从数据源创建图像 -
* @param[in] *pSrc 数据源
* @param[in] nWidth 图像宽度
* @param[in] nHeight 图像高度
* @param[in] nRowlen 数据源每行数据个数
* @return 成功或失败
*/
BOOL CyImage::Create(const float* pSrc, int nWidth, int nHeight, int nRowlen) throw()
{
if(NULL == pSrc)
return FALSE;
Destroy();
int nBPP = 8 * nRowlen / nWidth;
if (FALSE == CImage::Create(nWidth, nHeight, nBPP))
return FALSE;
if (nBPP == 8)
SetColorTabFor8BitImage(this);
InitFloatData();
memcpy(m_pFloatData, pSrc, nHeight * nRowlen * sizeof(float));
MemcpyFloatToByte();
return TRUE;
}
#ifdef IMAGE_SRC_H
/** - 从ImageSrc创建图像 - */
BOOL CyImage::Create(const ImageSrc *pSrc) throw()
{
Destroy();// 先销毁图像数据
if (FALSE == CImage::Create(pSrc->GetWidth(), pSrc->GetHeight(), pSrc->GetBPP(), 0UL))
return FALSE;
if (GetBPP() == 8)
SetColorTabFor8BitImage(this);
memcpy(GetHeadAddress(), pSrc->GetHeadAddress(), GetLength() * sizeof(BYTE));
InitFloatData();
MemcpyByteToFloat();
return TRUE;
}
#endif
/** - 加载图像 - */
HRESULT CyImage::Load(LPCTSTR pszFileName) throw()
{
// 如果文件为TXT
CString strPathName(pszFileName);
CString strExt = GetFileExt(strPathName);
strExt.MakeUpper();
#ifdef ENABLE_READ_WRITE_TXT
if (strExt == _T("TXT"))
{
int nWidth = 0, nHeight = 0, nRowlen = 0, nChannel = 0;
USES_CONVERSION;
BYTE *pSrc = ReadTxt(W2A(strPathName), nWidth, nHeight, nRowlen, nChannel);
if (pSrc == NULL)
return E_FAIL;
Create(nWidth, nHeight, 8 * nChannel, 0UL);
memcpy(GetHeadAddress(), pSrc, nRowlen * nHeight);
MemcpyByteToFloat();
SAFE_DELETE(pSrc);
return S_OK;
}
#endif
// 摧毁当前图像
Destroy();
// 加载进图像
HRESULT hr = CImage::Load(pszFileName);
if (hr != S_OK)
return hr;
InitFloatData();
MemcpyByteToFloat();
return S_OK;
}
/** - 同步数据 - */
void CyImage::MemcpyByteToFloat()
{
BYTE* pHead = GetHeadAddress();
float fRate = (m_fMaximum - m_fMinimum) / 255.f;
float fMinimum = m_fMinimum;
if (m_fMaximum == m_fMinimum)
{
fRate = 1.f;
fMinimum = 0;
}
int nWidth = GetWidth();
int nHeight = GetHeight();
int nChannel = GetChannel();
int nRowlen = GetRowlen();
int nFloatRowlen = GetFloatDataRowlen();
if (NULL == m_pFloatData)
{
m_pFloatData = new float[nHeight * nFloatRowlen];
}
for (int i = 0; i < nWidth; ++i)
{
int x = i * nChannel;
for (int j = 0; j < nHeight; ++j)
{
int y = j * nRowlen, z = j * nFloatRowlen;
for (int k = 0; k < nChannel; ++k)
m_pFloatData[k + x + z] = fRate * pHead[k + x + y] + fMinimum;
}
}
ComputeMinMax();
}
/** - 同步数据 - */
void CyImage::MemcpyFloatToByte()
{
ComputeMinMax();
BYTE* pHead = GetHeadAddress();
// 如果浮点数据是常量
if (m_fMaximum == m_fMinimum)
{
TRACE(" * 警告：浮点数据全部是一样的!\n");
BYTE val = (0 <= m_fMinimum && m_fMinimum < 256) ? (BYTE)m_fMinimum : 0;
memset(pHead, val, GetHeight() * GetRowlen() * sizeof(BYTE));
return;
}
float fRate = 255.f / (m_fMaximum - m_fMinimum);
int nWidth = GetWidth();
int nHeight = GetHeight();
int nChannel = GetChannel();
int nRowlen = GetRowlen();
int nFloatRowlen = GetFloatDataRowlen();
for (int i = 0; i < nWidth; ++i)
{
int x = i * nChannel;
for (int j = 0; j < nHeight; ++j)
{
int y = j * nRowlen, z = j * nFloatRowlen;
for (int k = 0; k < nChannel; ++k)
pHead[k + x + y] = BYTE(fRate * (m_pFloatData[k + x + z] - m_fMinimum));
}
}
}
/** - 同步数据 -
* @param[in] lower 下限
* @param[in] upper 上限
* @return 无
* @note 该函数会将超界的元素设为边界值
*/
void CyImage::MemcpyFloatToByteBounded(float lower, float upper)
{
BYTE* pHead = GetHeadAddress();
int nWidth = GetWidth();
int nHeight = GetHeight();
int nChannel = GetChannel();
int nRowlen = GetRowlen();
int nFloatRowlen = GetFloatDataRowlen();
for (int i = 0; i < nWidth; ++i)
{
int x = i * nChannel;
for (int j = 0; j < nHeight; ++j)
{
int y = j * nRowlen, z = j * nFloatRowlen;
for (int k = 0; k < nChannel; ++k)
{
if (m_pFloatData[k + x + z] < lower)
pHead[k + x + j * nRowlen] = (BYTE)lower;
else if (m_pFloatData[k + x + z] > upper)
pHead[k + x + y] = (BYTE)upper;
else
pHead[k + x + y] = (BYTE)m_pFloatData[k + x + z];
}
}
}
}
#ifdef ENABLE_IMAGE_TRANSFORM
/** - 从ImageTransform创建图像 - */
BOOL CyImage::Create(const ImageTransform *pSrc) throw()
{
if(NULL == pSrc)
return FALSE;
Destroy();
int nBPP = 8 * pSrc->GetRowlen() / pSrc->GetWidth();
if (FALSE == CImage::Create(pSrc->GetWidth(), pSrc->GetHeight(), nBPP))
return FALSE;
if (nBPP == 8)
SetColorTabFor8BitImage(this);
InitFloatData();
memcpy(m_pFloatData, pSrc, pSrc->GetHeight() * pSrc->GetRowlen() * sizeof(float));
MemcpyFloatToByte();
return TRUE;
}
/** - 根据矩形区域提取感兴趣区域的图像 - */
CyImage* CyImage::ROI(CLogoRect rect) const
{
if (rect == CLogoRect(0, 0, 0, 0))
return MakeCopy();
ImageTransform it(m_pFloatData, GetWidth(), GetHeight(), GetChannel());
ImageTransform pDst = it.ImageRoi(rect);
CyImage *pImage = NULL;
try
{
pImage = new CyImage;
}
catch (const std::bad_alloc)
{
return pImage;
}
pImage->Create(pDst, rect.Width(), rect.Height(), rect.Width() * GetChannel());
return pImage;
}
/** - 裁剪图像 - */
void CyImage::Cut(CLogoRect rect)
{
/// 下述两种情况不需要裁剪
if (rect == CLogoRect(0, 0, 0, 0))
return;
if (rect.left == 0 && rect.top == 0 && rect.right == GetWidth() && rect.bottom == GetHeight())
return;
/// 其他情况，获得感兴趣区域，并赋值给当前图像
ImageTransform it(m_pFloatData, GetWidth(), GetHeight(), GetChannel());
ImageTransform pDst = it.ImageRoi(rect);
Create(pDst, rect.Width(), rect.Height(), rect.Width() * GetChannel());
}
/** - 缩放图像 -
* @param[in] rate 缩放比例
* @return 无
*/
void CyImage::Zoom(float rate)
{
int NewWidth = int(GetWidth() * rate);
int NewHeight = int(GetHeight() * rate);
Zoom(NewWidth, NewHeight);
}
/** - 缩放图像 -
* @param[in] NewWidth 新图像宽度
* @param[in] NewHeight 新图像高度
* @return 无
*/
void CyImage::Zoom(int nNewWidth, int nNewHeight)
{
if (nNewWidth == GetWidth() && nNewHeight == GetHeight())
return;
ImageTransform it(m_pFloatData, GetWidth(), GetHeight(), GetChannel());
ImageTransform pDst = it.ImageZoom(nNewWidth, nNewHeight);
Create(pDst, nNewWidth, nNewHeight, nNewWidth * GetChannel());
}
/** - 缩放图像 -
* @param[in] NewWidth 新图像宽度
* @param[in] NewHeight 新图像高度
* @param[in] bNeededReturn 需要返回新图像数据块头指针
* @return 新图像数据块
*/
ImageTransform CyImage::Zoom(int NewWidth, int NewHeight, int bNeededReturn) const
{
ImageTransform it(m_pFloatData, GetWidth(), GetHeight(), GetChannel());
return it.ImageZoom(NewWidth, NewHeight);
}
/** - 对图像旋转一个角度 - */
void CyImage::Rotate(float degree)
{
float angle = RAD(degree);
InitFloatData();
MemcpyByteToFloat();
ImageTransform it(m_pFloatData, GetWidth(), GetHeight(), GetChannel());
ImageTransform pDst = it.ImageRotate(PositionTransform(angle, 0, 0), CLogoRect());
Create(pDst, pDst.GetWidth(), pDst.GetHeight(), pDst.GetRowlen());
}
/** - 旋转图像，并返回旋转得到的图像数据 -
* @param[in] angle 旋转角度
* @return 新图像数据块
*/
ImageTransform CyImage::Rotate(const PositionTransform &pt, CLogoRect &dstArea) const
{
ImageTransform it(m_pFloatData, GetWidth(), GetHeight(), GetChannel());
return it.ImageRotate(pt, dstArea);
}
#endif
/** - 图像将转换为8位灰度图 - */
void CyImage::ToGray()
{
ChangeBPP(8);
}
/** - 保存图像 - */
HRESULT CyImage::Save(LPCTSTR pszFileName, REFGUID guidFileType) const throw()
{
#ifdef ENABLE_READ_WRITE_TXT
// 尝试保存为txt文件
if (GetFileExt(pszFileName).CompareNoCase(_T("txt")) == 0)
{
USES_CONVERSION;
if (WriteTxt(W2A(pszFileName), GetHeadAddress(), GetWidth(), GetHeight(), GetChannel()))
return S_OK;
}
#endif
HRESULT hr = CImage::Save(pszFileName, guidFileType);
return hr;
}
#ifdef _AFX // MFC 环境下编译
/** - 加载图像 - 弹出选择文件对话框 */
HRESULT CyImage::Load(CWnd* pParentWnd) throw()
{
// 过滤器
CString strFilter = L"所有图像|*.BMP;*.DIB;*.RLE;*.JPG;*.JPEG;*.JPE;*.JFIF;*.GIF;*.TIF;"\
L"*.TIFF;*.PNG;*.ICO|BMP (*.BMP;*.DIB;*.RLE)|*.BMP;*.DIB;*.RLE|JPEG (*.JPG;*.JPEG;" \
L"*.JPE;*.JFIF)|*.JPG;*.JPEG;*.JPE;*.JFIF|GIF (*.GIF)|*.GIF|图标 (*.ICO)|*.ICO|所有文件|*.*||";
// 文件对话框
CFileDialog hFileDlg(TRUE, NULL, NULL, OFN_FILEMUSTEXIST | OFN_PATHMUSTEXIST, strFilter, pParentWnd);
hFileDlg.m_ofn.nFilterIndex = 1;
hFileDlg.m_ofn.lStructSize = sizeof(OPENFILENAME);
hFileDlg.m_ofn.lpstrTitle = TEXT("打开图像\0");
hFileDlg.m_ofn.nMaxFile = MAX_PATH;
if (hFileDlg.DoModal() != IDOK)
return E_FAIL;
// 调用其他Load函数
CString strFilePath = hFileDlg.GetPathName();
return Load(strFilePath);
}
/** - 保存图像 - */
BOOL CyImage::Save(REFGUID guidFileType) const throw()
{
return Save((CWnd*)NULL, guidFileType);
}
/** - 保存图像 -
* @details
guidFileType
The file type to save the image as. Can be one of the following:
ImageFormatBMP An uncompressed bitmap image.
ImageFormatPNG A Portable Network Graphic (PNG) compressed image.
ImageFormatJPEG A JPEG compressed image.
ImageFormatGIF A GIF compressed image.
Note For a complete list of constants, see Image File Format Constants in the Platform SDK.
*/
BOOL CyImage::Save(CWnd* pParentWnd, REFGUID guidFileType) const throw()
{
// 过滤器
CString strFilter = L"所有图像|*.BMP;*.DIB;*.RLE;*.JPG;*.JPEG;*.JPE;*." \
L"JFIF;*.GIF;*.TIF;*.TIFF;*.PNG;*.ICO|BMP (*.BMP;*.DIB;*.RLE)|*.BMP;"\
L"*.DIB;*.RLE|JPEG (*.JPG;*.JPEG;*.JPE;*.JFIF)|*.JPG;*.JPEG;*.JPE;" \
L"*.JFIF|GIF (*.GIF)|*.GIF|图标 (*.ICO)|*.ICO|所有文件|*.*||";
// 获取系统时间
SYSTEMTIME CurTime;
CString strDate, strTime;
GetLocalTime(&CurTime);
strDate.Format(_T("%4d年%2d月%2d日"), CurTime.wYear, CurTime.wMonth, CurTime.wDay);
strTime.Format(_T("%2d时%2d分%2d秒"), CurTime.wHour, CurTime.wMinute, CurTime.wSecond);
// 文件对话框
CFileDialog hFileDlg(FALSE, _T(".BMP"), strDate + strTime, OFN_FILEMUSTEXIST
| OFN_PATHMUSTEXIST | OFN_READONLY, strFilter, pParentWnd);
hFileDlg.m_ofn.nFilterIndex = 1;
hFileDlg.m_ofn.lStructSize = sizeof(OPENFILENAME);
hFileDlg.m_ofn.lpstrTitle = TEXT("保存图像\0");
hFileDlg.m_ofn.nMaxFile = MAX_PATH;
if (hFileDlg.DoModal() != IDOK)
return TRUE;
// 获取保存路径
CString strFile = hFileDlg.GetFileName();
CString strPath = hFileDlg.GetPathName();
CString strExt = hFileDlg.GetFileExt();
if (strFile.IsEmpty())
strPath = strPath + strDate + strTime;
if (strExt.IsEmpty())
{
switch (hFileDlg.m_ofn.nFilterIndex)
{
case 1 :strExt = _T("BMP"); break;
case 2 :strExt = _T("BMP"); break;
case 3 :strExt = _T("JPG"); break;
case 4 :strExt = _T("GIF"); break;
case 5 :strExt = _T("ICO"); break;
case 6 :strExt = _T("JPG"); break;
default:strExt = _T("JPG"); break;
}
strPath = strPath + _T(".") + strExt;
}
return SUCCEEDED(Save(strPath, guidFileType));
}
#endif // _AFX
/** - 安全销毁所关联的位图 - */
void CyImage::Destroy() throw()
{
if (!IsNull())
{
CImage::Destroy();
SAFE_DELETE(m_pFloatData);
}
}
/** - 水平翻转图像 - */
void CyImage::FlipH()
{
int nWidth = GetWidth();
int nHeight = GetHeight();
int nChannel = GetChannel();
int nRowlen = GetRowlen();
BYTE* temp = new BYTE[nHeight * nRowlen];
BYTE* head = GetHeadAddress();
memcpy(temp, head, nHeight * nRowlen * sizeof(BYTE));
for (int r = 0; r < nHeight; ++r)
{
int y = r * nRowlen;
for (int c = 0; c < nWidth; ++c)
{
memcpy(head + c *nChannel + y, temp + (nWidth - 1 - c) * nChannel + y,
nChannel * sizeof(BYTE));
}
}
SAFE_DELETE(temp);
}
/** - 垂直翻转图像 - */
void CyImage::FlipV()
{
int nHeight = GetHeight();
int nRowlen = GetRowlen();
BYTE* temp = new BYTE[nHeight * nRowlen * sizeof(BYTE)];
BYTE* head = GetHeadAddress();
memcpy(temp, head, nHeight * nRowlen * sizeof(BYTE));
for (int r = 0; r < nHeight; ++r)
{
memcpy(head + r * nRowlen, temp + (nHeight - 1 - r) * nRowlen, nRowlen * sizeof(BYTE));
}
SAFE_DELETE(temp);
}
/** - 转置图像 - */
void CyImage::Transpose()
{
int nWidth = GetWidth();
int nHeight = GetHeight();
int nRowlen = GetRowlen();
int nChannel = GetChannel();
InitFloatData();
MemcpyByteToFloat();
int nFloatRowlen = GetFloatDataRowlen();
float* temp = new float[nHeight * nFloatRowlen];
memcpy(temp, m_pFloatData, nHeight * nFloatRowlen * sizeof(float));
BYTE* temp2 = new BYTE[nHeight * nRowlen];
memcpy(temp2, GetHeadAddress(), nHeight * nRowlen * sizeof(BYTE));
Create(nHeight, nWidth, nChannel * 8, 0UL);
int nNewWidth = GetWidth();
int nNewHeight = GetHeight();
int nNewFloatRowlen = GetFloatDataRowlen();
BYTE *pHead = GetHeadAddress();
int nNewRowlen = GetRowlen();
for (int i = 0; i < nNewHeight; ++i)
{
int y = i * nNewRowlen, z = i * nNewFloatRowlen;
for (int j = 0; j < nNewWidth; ++j)
{
int x = (nNewWidth - 1 - j) * nChannel, x0 = i * nChannel;
int y0 = j * nRowlen, z0 = j * nFloatRowlen;
for (int k = 0; k < nChannel; ++k)
{
m_pFloatData[k + x + z] = temp[k + x0 + z0];
pHead[k + x + y] = temp2[k + x0 + y0];
}
}
}
SAFE_DELETE(temp);
SAFE_DELETE(temp2);
}
/** - 向右转置图像 - */
void CyImage::TransposeR()
{
int nWidth = GetWidth();
int nHeight = GetHeight();
int nRowlen = GetRowlen();
int nChannel = GetChannel();
InitFloatData();
MemcpyByteToFloat();
int nFloatRowlen = GetFloatDataRowlen();
float* temp = new float[nHeight * nFloatRowlen];
memcpy(temp, m_pFloatData, nHeight * nFloatRowlen * sizeof(float));
BYTE* temp2 = new BYTE[nHeight * nRowlen];
memcpy(temp2, GetHeadAddress(), nHeight * nRowlen * sizeof(BYTE));
Create(nHeight, nWidth, nChannel * 8, 0UL);
int nNewWidth = GetWidth();
int nNewHeight = GetHeight();
int nNewFloatRowlen = GetFloatDataRowlen();
BYTE *pHead = GetHeadAddress();
int nNewRowlen = GetRowlen();
for (int i = 0; i < nNewHeight; ++i)
{
int y = (nNewHeight - 1 - i) * nNewRowlen;
int z = (nNewHeight - 1 - i) * nNewFloatRowlen;
for (int j = 0; j < nNewWidth; ++j)
{
int x = j * nChannel, x0 = i * nChannel;
int y0 = j * nRowlen, z0 = j * nFloatRowlen;
for (int k = 0; k < nChannel; ++k)
{
m_pFloatData[k + x + z] = temp[k + x0 + z0];
pHead[k + x + y] = temp2[k + x0 + y0];
}
}
}
SAFE_DELETE(temp);
SAFE_DELETE(temp2);
}
/** - 对直方图进行排序 - */
void CyImage::GetCluster(int cluster[256]) const
{
int hist[256];
GetGrayHist(hist);
for (int i = 0; i < 256; ++i)
{
cluster[i] = i;
}
for (int i = 0; i < 256; i++)
{
for (int j = i; j < 256; ++j)
{
if (hist[j] > hist[i])
{
// 交换次序
SWAP(hist[j], hist[i]);
SWAP(cluster[j], cluster[i]);
}
}
}
}
/** - 获取灰度直方图 - */
BOOL CyImage::GetGrayHist(int hist[256]) const
{
ZeroMemory(hist, 256 * sizeof(int));
int nChannel = GetChannel();
int nWidth = GetWidth();
int nHeight = GetHeight();
int nRowlen = GetRowlen();
BYTE *pSrc = GetHeadAddress();
if (nChannel == 1)
{
for (int i = 0; i < nHeight; ++i)
{
int y = i * nRowlen;
for (int j = 0; j < nWidth; ++j)
{
hist[pSrc[j * nChannel + y]]++;
}
}
}
else if (nChannel == 3 || nChannel == 4)
{
for (int i = 0; i < nHeight; ++i)
{
int y = i * nRowlen;
for (int j = 0; j < nWidth; ++j)
{
int index = RGB2GRAY (pSrc[2 + j * nChannel + y],
pSrc[1 + j * nChannel + y], pSrc[j * nChannel + y]);
hist[index]++;
}
}
}
return TRUE;
}
/** - 获取图像直方图 - */
BOOL CyImage::GetHistogram(int hist[4][256]) const
{
ZeroMemory(hist, 4 * 256 * sizeof(int));
int nChannel = GetChannel();
int nWidth = GetWidth();
int nHeight = GetHeight();
int nRowlen = GetRowlen();
BYTE *pSrc = GetHeadAddress();
if (nChannel == 1)
{
for (int i = 0; i < nHeight; ++i)
{
int y = i * nRowlen;