opencv c++ 修改加载图像大小限制

源码修改

文件：E:\software\opencv\openCV411\sources\modules\imgcodecs\src\loadsave.cpp

cpp 复制代码

static const size_t CV_IO_MAX_IMAGE_PARAMS = cv::utils::getConfigurationParameterSizeT("OPENCV_IO_MAX_IMAGE_PARAMS", 50);
static const size_t CV_IO_MAX_IMAGE_WIDTH = utils::getConfigurationParameterSizeT("OPENCV_IO_MAX_IMAGE_WIDTH", 1 << 20);
static const size_t CV_IO_MAX_IMAGE_HEIGHT = utils::getConfigurationParameterSizeT("OPENCV_IO_MAX_IMAGE_HEIGHT", 1 << 20);
static const size_t CV_IO_MAX_IMAGE_PIXELS = utils::getConfigurationParameterSizeT("OPENCV_IO_MAX_IMAGE_PIXELS", 1 << 30);//修改为下面
static const size_t CV_IO_MAX_IMAGE_PIXELS = utils::getConfigurationParameterSizeT("OPENCV_IO_MAX_IMAGE_PIXELS", size_t(1) << 31);

E:\software\opencv\openCV411\sources\modules\imgcodecs\src\grfmt_tiff.cpp

cpp 复制代码

const uint64_t MAX_TILE_SIZE = (CV_BIG_UINT(1) << 30);//
const uint64_t MAX_TILE_SIZE = (CV_BIG_UINT(6) << 30);// 修改为6GB (6 * 1024 * 1024 * 1024 bytes)

E:\software\opencv\openCV411\sources\modules\imgcodecs\src\grfmt_bmp.cpp

cpp 复制代码

  // FIXIT: use safe pointer arithmetic (avoid 'int'), use size_t, intptr_t, etc
    CV_Assert(((uint64)m_height * m_width * nch < (CV_BIG_UINT(1) << 30)) && "BMP reader implementation doesn't support large images >= 1Gb");

//修改为
  // FIXIT: use safe pointer arithmetic (avoid 'int'), use size_t, intptr_t, etc
    CV_Assert(((uint64)m_height * m_width * nch < (CV_BIG_UINT(6) << 30)) && "BMP reader implementation doesn't support large images >= 6Gb");