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Content-based image compression for arbitrary-resolution display devices

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Content-based image compression for arbitrary-resolution display devices
นักวิจัย : Deng, Chenwei , Lin, Weisi , Cai, Jianfei
คำค้น : DRNTU::Engineering::Computer science and engineering
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Deng, C., Lin, W., & Cai, J. (2012). Content-Based Image Compression for Arbitrary-Resolution Display Devices. IEEE Transactions on Multimedia, 14(4), 1127-1139. , 1520-9210 , http://hdl.handle.net/10220/11402 , http://dx.doi.org/10.1109/TMM.2012.2191270
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : IEEE transactions on multimedia
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The existing image coding methods cannot support content-based spatial scalability with high compression. In mobile multimedia communications, image retargeting is generally required at the user end. However, content-based image retargeting (e.g., seam carving) is with high computational complexity and is not suitable for mobile devices with limited computing power. The work presented in this paper addresses the increasing demand of visual signal delivery to terminals with arbitrary resolutions, without heavy computational burden to the receiving end. In this paper, the principle of seam carving is incorporated into a wavelet codec (i.e., SPIHT ). For each input image, block-based seam energy map is generated in the pixel domain. In the meantime, multilevel discrete wavelet transform (DWT) is performed. Different from the conventional wavelet-based coding schemes, DWT coefficients here are grouped and encoded according to the resultant seam energy map. The bitstream is then transmitted in energy descending order. At the decoder side, the end user has the ultimate choice for the spatial scalability without the need to examine the visual content; an image with arbitrary aspect ratio can be reconstructed in a content-aware manner based upon the side information of the seam energy map. Experimental results show that, for the end users, the received images with an arbitrary resolution preserve important content while achieving high coding efficiency for transmission.

บรรณานุกรม :
Deng, Chenwei , Lin, Weisi , Cai, Jianfei . (2555). Content-based image compression for arbitrary-resolution display devices.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Deng, Chenwei , Lin, Weisi , Cai, Jianfei . 2555. "Content-based image compression for arbitrary-resolution display devices".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Deng, Chenwei , Lin, Weisi , Cai, Jianfei . "Content-based image compression for arbitrary-resolution display devices."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Deng, Chenwei , Lin, Weisi , Cai, Jianfei . Content-based image compression for arbitrary-resolution display devices. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.