gdal读写图像分块处理，可以轻松实现读写tif格式

一个很好的使用gdal读写影像的例子，程序中使用分块读写和多线程，支持海量数据的影像，方便大家使用-A good example of using gdal reading and writing images, program and use the block read and write multi-threaded, supporting massive image data, to facilitate the use

GDAL大图像分块存储，降低使用内存。 -The GDAL large image block storage, reducing the use of memory. The GDAL large image block storage, reducing the use of memory.