Design of efficient decompression algorithm in helicopter flight

Under the poor condition of low visibility, the pilot may get lost and be in danger when a helicopter is flying fleetly at low altitude. The 3D visual simulation can furnish the pilot a broad vision of the visual 3D geographical environment. The data of those high-resolution images are so great that their read and store are restricted badly. Based on the coefficients correlation after proper lifting scheme wavelets transform, the coefficients are vectorized and the vector quantization coding is applied for digital image compression. The real-time requirement in flight can be realized because of the high compression ratio and fast decoding speed in the light of the non-symmetrical coding of vector quantization.