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gdi加载灰度图像先转成彩色，去除噪点

This commit is contained in:
yangjiaxuan 2024-01-10 18:18:49 +08:00
parent 570cc3f686
commit 82b717b16a
1 changed files with 6 additions and 3 deletions
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9
modules/base/HGImage.cpp
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@ -1,4 +1,4 @@
#include "HGImage.h" #include "HGImage.h"
#include "HGInc.h" #include "HGInc.h"
#if defined(HG_CMP_MSC) #if defined(HG_CMP_MSC)
#include <combaseapi.h> #include <combaseapi.h>
@ -525,12 +525,11 @@ static HGResult LoadGdiImage(Gdiplus::Image* pImage, const HGImageRoi* roi, HGUI
HBITMAP hBmp = NULL; HBITMAP hBmp = NULL;
HGBase_GetHBITMAPOfImage(*image, &hBmp); HGBase_GetHBITMAPOfImage(*image, &hBmp);
if (NULL != hBmp) if (NULL != hBmp && (HGBASE_IMGTYPE_BGR == type || HGBASE_IMGTYPE_BGRA == type))
{ {
HDC hMem = CreateCompatibleDC(NULL); HDC hMem = CreateCompatibleDC(NULL);
HBITMAP hOldBmp = (HBITMAP)SelectObject(hMem, hBmp); HBITMAP hOldBmp = (HBITMAP)SelectObject(hMem, hBmp);
Gdiplus::Graphics graphics(hMem); Gdiplus::Graphics graphics(hMem);
graphics.SetInterpolationMode(Gdiplus::InterpolationModeHighQuality);
graphics.DrawImage(pImage, (INT)roi2.left, (INT)roi2.top, graphics.DrawImage(pImage, (INT)roi2.left, (INT)roi2.top,
(INT)(roi2.right - roi2.left), (INT)(roi2.bottom - roi2.top)); (INT)(roi2.right - roi2.left), (INT)(roi2.bottom - roi2.top));
SelectObject(hMem, hOldBmp); SelectObject(hMem, hOldBmp);
@ -544,6 +543,10 @@ static HGResult LoadGdiImage(Gdiplus::Image* pImage, const HGImageRoi* roi, HGUI
type2 = HGBASE_IMGTYPE_BGR; type2 = HGBASE_IMGTYPE_BGR;
else if (HGBASE_IMGTYPE_RGBA == type) else if (HGBASE_IMGTYPE_RGBA == type)
type2 = HGBASE_IMGTYPE_BGRA; type2 = HGBASE_IMGTYPE_BGRA;
else if (HGBASE_IMGTYPE_GRAY == type)
type2 = HGBASE_IMGTYPE_BGR;
else if (HGBASE_IMGTYPE_BINARY == type)
type2 = HGBASE_IMGTYPE_BGR;
HGImage image2 = NULL; HGImage image2 = NULL;
ret = LoadGdiImage(pImage, roi, type2, origin, &image2); ret = LoadGdiImage(pImage, roi, type2, origin, &image2);