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1. (WO2019066704) METHOD IN AN IMAGE COMPRESSION DEVICE AND IN AN IMAGE DECOMPRESSION DEVICE
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Pub. No.: WO/2019/066704 International Application No.: PCT/SE2018/050979
Publication Date: 04.04.2019 International Filing Date: 26.09.2018
IPC:
H04N 19/59 (2014.01) ,G06K 9/46 (2006.01) ,G06T 7/13 (2017.01) ,H04N 19/167 (2014.01) ,G02B 27/01 (2006.01) ,H04N 21/4728 (2011.01) ,H04N 21/6587 (2011.01)
[IPC code unknown for H04N 19/59]
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9
Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
36
Image preprocessing, i.e. processing the image information without deciding about the identity of the image
46
Extraction of features or characteristics of the image
[IPC code unknown for G06T 7/13][IPC code unknown for H04N 19/167]
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27
Other optical systems; Other optical apparatus
01
Head-up displays
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
40
Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB [set-top-box]; Operations thereof
47
End-user applications
472
End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification or for manipulating displayed content
4728
for selecting a ROI [Region Of Interest], e.g. for requesting a higher resolution version of a selected region
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
60
Network structure or processes for video distribution between server and client or between remote clients; Control signaling between clients, server and network components; Transmission of management data between server and client; Communication details between server and client
65
Transmission of management data between client and server
658
Transmission by the client directed to the server
6587
Control parameters, e.g. trick play commands or viewpoint selection
Applicants:
DOZERO TECH AB [SE/SE]; Campus Gräsvik 2 371 75 KARLSKRONA, SE
Inventors:
YAO, Yong; SE
Agent:
AWA SWEDEN AB; Box 5117 200 71 MALMÖ, SE
Priority Data:
1751194-026.09.2017SE
Title (EN) METHOD IN AN IMAGE COMPRESSION DEVICE AND IN AN IMAGE DECOMPRESSION DEVICE
(FR) PROCÉDÉ DANS UN DISPOSITIF DE COMPRESSION D'IMAGE ET DANS UN DISPOSITIF DE DÉCOMPRESSION D'IMAGE
Abstract:
(EN) There are provided methods and apparatuses for image compressionand image decompression. The image compression method comprises: receiving a first image having a first resolution, downscaling the first image to produce a second image having a second resolution being lower than the first resolution, detecting edges in the first image so as to produce an edge map which indicates where in the first image edges are present, andtransmitting the second image and the edge map to animage compression device.The decompression methodcomprises:receiving a secondimage having a secondresolution and an edge map from an image compression device, upscaling the secondimage to produce a thirdimage having a thirdresolution being greater than the secondresolution, updating the thirdimage based on the received edge map, andtransmitting the updated thirdimage to an image renderer.
(FR) L'invention concerne des procédés et des appareils de compression d'image et de décompression d'image. Le procédé de compression d'image consiste à : recevoir une première image ayant une première résolution, effectuer une réduction d'échelle de la première image pour produire une deuxième image ayant une deuxième résolution inférieure à la première résolution, détecter des bords dans la première image de façon à produire une carte de bord qui indique où les bords sont présents dans la première image, et transmettre la deuxième image et la carte de bord à un dispositif de compression d'image. Le procédé de décompression consiste à : recevoir une deuxième image ayant une deuxième résolution et une carte de bord provenant d'un dispositif de compression d'image, effectuer une augmentation d'échelle de la deuxième image pour produire une troisième image ayant une troisième résolution supérieure à la deuxième résolution, mettre à jour la troisième image en fonction de la carte de bord reçue, et transmettre la troisième image mise à jour à un système de rendu d'image.
front page image
Designated States: 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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, 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, SA, 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
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)