Parallel image resample algorithm based on GPU for land remote sensing data management

In order to accelerate the image pyramid creation algorithm,first we migrate the image resample algorithm to CUDA(Compute Unified Device Architecture),which is the core step of image pyramid creation algorithm.Then the image pyramid creation based on threshold is presented to combine GPU and CPU image resample algorithm,considering that the data size could affect the mage resample algorithm's efficiency.Finally the algorithm is applied to the management of land remote sensing data.By using 24-bit 10 371×7 945 image for testing,the experiment result shows that: ①the GPU resample algorithm's speedup is 10 times faster than CPU resample algorithm's,②on using the same type of resample algorithm,our parallel creating pyramid method's speedup is 3 times faster than ArcGIS 93's.