Patent SG-11201407007R-A (SG)
Title: Video-conference terminal device, video-conference system, image distortion correction method, and image distortion correction processing program product
Inventor: KASATANI KIYOSHI
IPC: H04N7/15
Filed: 2013-05-16
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 21 November 2013 (21.11.2013) WIPOIPCT (10) International Publication Number WO 2013/172478 A1 (51) International Patent Classification: H04N 7/15 (2006.01) H04N 5/225 (2006.01) (21) International Application Number: (22) International Filing Date: (25) Filing Language: (26) Publication Language: PCT/JP2013/064298 16 May 2013 (16.05.2013) English English (30) Priority Data: 2012-114482 2013-039708 18 May 2012 (18.05.2012) JP 28 February 2013 (28.02.2013) JP (71) Applicant (for all designated States except US): RICOH COMPANY, LIMITED [ JP/JP] ; 3-6, Nakamagome 1- chome, Ohta-ku, Tokyo, 1438555 (JP). (72) Inventors; and (71) Applicants (for US only)-. KASATANI, Kiyoshi [JP/JP]; c/o RICOH COMPANY, LIMITED, 3-6, Nakamagome 1- chome, Ohta-ku, Tokyo, 1438555 (JP). SAKAMOTO, Hisao [JP/JP]; c/o RICOH COMPANY, LIMITED, 3-6, Nakamagome 1-chome, Ohta-ku, Tokyo, 1438555 (JP). (74) Agent: SAKAI, Hiroaki; Sakai International Patent Of­ fice, Kasumigaseki Building, 2-5, Kasumigaseki 3-chome, Chiyoda-ku, Tokyo, 1006020 (JP). (81) Designated States (unless otherwise indicated, for every kind of national protection available)'. AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available)'. ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3)) (54) Title: VIDEO-CONFERENCE TERMINAL DEVICE, VIDEO-CONFERENCE SYSTEM, IMAGE DISTORTION CORREC­ TION METHOD, AND IMAGE DISTORTION CORRECTION PROCESSING PROGRAM PRODUCT CAMERA LENS vL VIDEO-CONFERENCE TERMINAL DEVICE CAMERA IMAGE CORRECTION CONTROL UNIT 00 l> •t CJ l> i-H cn i-H o CJ o & CAMERA IMAGE CORRECTION TABLE STORAGE UNIT NETWORK CONTROL UNIT CAMERA DISPLAY SWITCHING VIDEO DISPLAY UNIT CAMERA DIRECTION SWITCH OTHER OPERATION KEYS FIG.2 REMOTE VIDEO- CONFERENCE TERMINAL J DEVICES REMOTE VIDEO- CONFERENCE TERMINAL J DEVICES -J? »^^TWORKy VIDEO­ SERVER (57) Abstract: A local video-conference terminal device (100) includes wide-angle a camera lens (10), a camera image correction control unit (12) that performs distortion correction processing on an image included in digital video signal from the wide-angle camera lens (10), a camera image correction table storage unit (13) including correction tables for the distortion correction pro­ cessing regarding partial area a of the image, video a display unit (19) displaying the digital video signal after distortion correction, and a camera display switching key (20) outputting a signal to select an image correction table. The camera image correction control unit (12) performs the distortion correction processing on the image included in digital video signal using the image correction table selected by switching through the camera display switching key (20).