携帯端末における超高解像度画像閲覧方式に関する検討

全文

(1)im. 2006-AVM-54. IPSJ SIG Technical Report. (id. 2006/9/29. f 356-8502 ^EE»^ C^»rfT^lg 2-1-15 f 565-0871 E-mail:. [email protected]. jpip ^-<-. JPEG 2000,. JPIP,. A Study on Browsing Method of High-Resolution Images with Mobile Terminals Masayuki HASHIMOTO1 KenjiMATSUO1^ Atsushi KOIKE1 and SeiichiSAMPEI* T KDDI R&D Laboratories Inc. 2-1-15 Ohara, Fujimino-Shi, Saitama, 356-8502, Japan. x Graduate School of Engineering, Osaka University 2-1 Yamadaoka, Suita-Shi, Osaka, 565-0871, Japan E-mail: Abstract. [email protected]. This paper proposes the browsing method of high-resolution images with mobile terminals based on JPIP which is interactivity. protocols of JPEG 2000 images.. It is difficult for mobile terminals to display high-resolution images due to the limitation of band width and memory in the terminals. JPIP takes a long time to transmit middle-resolution-level data because images have a large volume of data in their middle-resolution levels. Therefore, we propose the method to transmit the different number of layers for different resolution levels in order to reduce the amount of data transmitted for the low and middle resolution levels. We implemented the image-transmission-and-display software on mobile phone. terminals to conduct transmission experiments. The experiments show mat the proposed method reduce the transmission time for low and. middle resolution levels.. Keyword. l. ttCftfc. High-resolution images, mobile terminals, JPEG 2000, JPIP, Layers. «*Pftfi©iHKfc#i-6=-X35Jji5*or< 5 hot. 3 £. -59-.

(2) Klc. v Ktt* €>lc/ JPEG 2000[l][2]ri*&B. .. JPEG 2000. Tit,. £,. JPEG 2000 -ett>f >. irin. Source. (JPEG 2000 Part9: JPIP). J2K file. JPIP "Ctt,. ,. m? 1. JPEG. Resolution level 0 Resolution level 1 Resolution level 2. /. ^Jk. Resolution level 3 ^^. bit-;. .. .,. .. code-block «. pass c , pass a. jpip. Layer. pass b. pass c*. 0. JPEG 2000*3 cfctf JPIP. (. ^ pass a. pass b Layer pass c. *. * pass a^. pass If pass c. n code-block. Layer. 2. JPEG 2000 Bffll©>f ^^ 9 2.1. JPEG 2000 2.2. JPIP. 4 |£f—/< iC. ^b t. -60-. ^ JPEG 2000 n^ft<D $.

(3) JPEG 2000 iS&<E>. 2.3. Mffi JPEG 2000 a—KXMJ — m 5(a)£,. 10000 JPIP lc. Xtt 137 0ft X 118 0$) -<^2, 3, 0. :;t,. 12. jpeg 2000. 1/20 £fcte 1/40 i: Ufc.. 5(a)J; «9 , ^fr©ffili**S 1/20. JPEG 2000®^^^. - 61 -. ^ 71-f. 3. 4. 5. 6.

(4) . o*5,. iS — 35dB. JPEG 2000. 6IC,. JPEG 2000. b S fc 0.003 bpp(bit/pixel) hL, 0.01 bpp, 3,. 4,. 5,. 6,. 7$). .003 bpp, 0.06 bpp,. 0.16 bpp,. 0.4 bpp,. 1.2bpp. PSNR. It,. JPEG. 7). 157. PSNR tt. 0 <O J:. 45dB. 2.3. -62-. ^/H. 7 fc,.

(5) 4.2. (4.1 #-4.4. 4.2.1. .. 10000. jpip \z 30. l57Ii*xil8IHIt). 20. 2, 3,. 10. (5 2.4Mbps (^. 3. 4. 5. 6. - h *m& IT u-T ir#£iJ£fTo. c JPEG 2000 4rffl v^fc>f ^^ 7 ^ -^ -f. (jpip) ^-^ittittu. 1/20. 22.3 #,. JPEG 2000 a- K* h. 1/40. < ftfe 5 ,. 1/20. 7.9 1^-10.. <^ 2-4. 4.2.2.. tttt,. 1/20. -63-. 2-4).

(6) [1] ISO/IEC 15444-1, "Information technology - JPEG 2000 image coding system — Part 1: Core coding system," ISO/IEC JTC 1/SC 29/WGl, Jan.2001. [2]. D.S. Taubman, "High performance scalable image compression with EBCOT," IEEE Trans. Image Proa, vol.3 no.5, pp. 1158-1170, Jul. 2000.. [3]. ISO/IEC 15444-9, "Information technology -- JPEG 2000 image coding system - Part 9: Interactivity tools, APIs and protocols," ISO/IEC JTC 1/SC 29/WGl, Nov.2005.. [4] G.. J.. Colyer and R.. A.. Clark, "JPEG 2000 and. Interactive Applications", IEEE Trans. Cons. Elec, vol.49, no.4, pp850-854, Nov. 2003.. [5] J. Hara, " An Implementation of JPEG 2000 Interactive Image Communication System," IEEE International Symposium on Circuits and Systems, Vol.6, pp.5992, May 2005.. -64-.

(7)