Computer Science

Computer Science ›› 2019, Vol. 46 ›› Issue (6A): 222-225.

• Pattern Recognition & Image Processing • Previous Articles     Next Articles

Image Compression Method Combining Canny Edge Detection and SPIHT

WANG Ya-ge, KANG Xiao-dong, GUO Jun, HONG Rui, LI Bo, ZHANG Xiu-fang   

  1. School of Medical Imaging,Tianjin Medical University,Tianjin 300203,China
  • Online:2019-06-14 Published:2019-07-02

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Abstract: To solve the problem that the reconstructed images obtained by SPIHT algorithm will lose texture details this paper proposed an image compression algorithm combining Canny edge detection and SPIHT.First,Canny edge detection is performed for the image,the extracted edge map,and edge recomposition is obtained;Secondly,SPIHT algorithm is used to encode the image,the encoded code stream is enconded and decoded by using Huffma,anda reconstructed image is obtained after SPIHT algorithm decoding and wavelet inverse transformation.inally,the two reconstructed images are added to recover the original image.The results show that the PSNR value and information entropy of reconstructed images are improved at low bites per pixel,compared with SPIHT combined with Huffman encode algorithm,and the information amount of reconstructed images is increased.

Key words: Image compression, SPIHT, Canny edge detection, Information entropy

CLC Number: 

  • TP391.41
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