TWI635751B - 可組配用於視訊注意區域（ｒｏｉ）傳信之以經由ｉｍｓ之多媒體電話服務（ｍｔｓｉ）為基礎的使用者設備（ｕｅ）（二） - Google Patents

可組配用於視訊注意區域（ｒｏｉ）傳信之以經由ｉｍｓ之多媒體電話服務（ｍｔｓｉ）為基礎的使用者設備（ｕｅ）（二） Download PDF

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TWI635751B
TWI635751B TW106102708A TW106102708A TWI635751B TW I635751 B TWI635751 B TW I635751B TW 106102708 A TW106102708 A TW 106102708A TW 106102708 A TW106102708 A TW 106102708A TW I635751 B TWI635751 B TW I635751B
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roi
mtsi
video
rtp
receiver
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TW106102708A
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TW201720140A (zh
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歐茲葛 歐依曼
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英特爾Ｉｐ公司
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Abstract

在一視訊會議應用程式中，觀看一場景之一使用者可藉由選擇該場景中之一區、接著將該場景之一視訊饋入動態地切換至該場景之該選定區來執行變焦。該視訊會議應用程式之硬體及軟體可將傳輸至該使用者之視訊限制於僅包括該場景之該選定區。僅傳輸該場景之該選定區及自傳輸排除該場景之非選定區可更有效率地使用該視訊會議應用程式之可用頻寬。

Description

可組配用於視訊注意區域(ROI)傳信之以經由IMS之多媒體電話服務 (MTSI)為基礎的使用者設備(UE)(二) 發明領域
實施例有關於由電子器件在無線網路中執行之操作及通訊。一些實施例係關於在無線網路上發生之交談式視訊工作階段。
發明背景
在典型視訊會議應用程式中，兩個使用者接收彼此之實況視訊影像。在許多情況下，使用者可希望放大顯示出現在另一使用者之實況視訊影像中之特定特徵。因此，存在對視訊會議應用程式中的互動式變焦技術之需要。
依據本發明之一實施例，係特地提出一種以經由IP多媒體子系統(IMS)之一多媒體電話服務(MTSI)為基礎的使用者設備(UE)之裝置，該UE可組配用於視訊注意區域(ROI)傳信以及操作作為一MTSI發送器，該裝置包 含：記憶體；以及處理電路經組配以：執行與一MTSI接收器之一工作階段描述協定(SDP)能力協商；傳信用於該MTSI接收器在即時傳送協定(RTP)封包中的一第一ROI之視訊注意區域(ROI)資訊；解碼來自該MTSI接收器之已接收的RTP酬載封包，該等RTP酬載封包包含對應於該第一ROI之視訊；解碼在RTCP回饋報告中所接收的請求一第二ROI之傳信，該第二ROI在該SDP能力協商期間被提供，該RTCP回饋報告從該MTSI接收器被接收，該第二ROI為在該SDP能力協商期間所提供的該MTSI發送器之一預定義的ROI；以及編碼用於傳輸至該MTSI接收器之對應於該第二ROI在RTP酬載封包中的視訊。
100‧‧‧視訊會議應用程式
102‧‧‧本端使用者
104‧‧‧遠端使用者
106‧‧‧本端使用者設備(本端UE)
108‧‧‧遠端使用者設備(遠端UE)
110‧‧‧注意區域(ROI)
112、124‧‧‧無線電存取網路
114、126‧‧‧伺服GPRS支援節點(SGSN)
116、128‧‧‧閘道器GPRS支援節點(GGSN)
118、130‧‧‧代理呼叫工作階段控制功能(P-CSCF)
120、132‧‧‧伺服呼叫工作階段控制功能(S-CSCF)
122、134‧‧‧應用程式伺服器(AS)
136‧‧‧本籍用戶伺服器(HSS)及/或用戶位置功能(SLF)
202‧‧‧發送用戶端
204‧‧‧接收用戶端
300‧‧‧流程圖
302‧‧‧在本端UE處界定ROI
304‧‧‧引導遠端UE擷取ROI內之視訊
306‧‧‧在本端UE處接收所擷取視訊
308‧‧‧在本端UE處顯示所接收視訊
400‧‧‧行動器件
402‧‧‧外殼
404‧‧‧顯示幕
406‧‧‧鍵盤
408‧‧‧天線
410‧‧‧非依電性記憶體埠
412‧‧‧揚聲器
414‧‧‧應用程式處理器
416‧‧‧內部記憶體
418‧‧‧圖形處理器
420‧‧‧麥克風
422‧‧‧攝影機
500‧‧‧電腦系統機器
502‧‧‧處理器
504‧‧‧主記憶體
506‧‧‧靜態記憶體
508‧‧‧互連件
510‧‧‧視訊顯示單元
512‧‧‧輸入器件
514‧‧‧使用者介面(UI)導覽器件
516‧‧‧儲存器件
518‧‧‧信號產生器件
520‧‧‧網路介面器件
522‧‧‧機器可讀媒體
524‧‧‧指令
526‧‧‧通訊網路
528‧‧‧感測器
530‧‧‧天線
532‧‧‧輸出控制器
534‧‧‧電力管理控制器
圖1說明用於視訊會議應用程式之架構的實例。
圖2說明用於視訊會議應用程式之傳信方案的實例。
圖3說明用於視訊會議應用程式之操作方法之實例的流程圖。
圖4說明本文中所描述之組配及技術可部署於其上的行動用戶端器件的實例。
圖5說明可用作本文中所描述之計算或網路連接器件之計算平台的實例電腦系統。
較佳實施例之詳細說明
以下描述及圖式充分地說明特定實施例以使熟 習此項技術者能夠實踐該等實施例。其他實施例可併有結構、邏輯、電氣、處理程序及其他改變。一些實施例之部分及特徵可包括於其他實施例之部分及特徵中或取代其他實施例之部分及特徵。技術方案中所陳述之實施例涵蓋該等技術方案之所有可用等效物。
在一視訊會議應用程式中，觀看一場景之一使用者可藉由選擇該場景中之一區、接著將該場景之一視訊饋入動態地切換至該場景之該選定區來執行變焦。該視訊會議應用程式之硬體及軟體可將傳輸至該使用者之視訊限制於僅包括該場景之該選定區。僅傳輸該場景之該選定區及自傳輸排除該場景之非選定區可更有效率地使用該視訊會議應用程式之可用頻寬。
圖1說明用於視訊會議應用程式100之架構的實例。視訊會議應用程式100執行本端使用者102與遠端使用者104之間的雙向視訊會議。
本端使用者102在本端使用者設備(本端UE)106上執行視訊會議應用程式100，本端UE可包括膝上型電腦、蜂巢式電話或另一合適器件。本端UE 106包括攝影機(其在操作期間擷取本端使用者102之視訊)及顯示器(其在操作期間向本端使用者102顯示遠端使用者104之視訊)。
遠端使用者104在遠端使用者設備(遠端UE)108上執行視訊會議應用程式100。遠端UE 108亦包括攝影機(其在操作期間擷取遠端使用者104之視訊)及顯示器(其在操作期間向遠端使用者104顯示本端使用者102之視訊)。 本端UE 106及遠端UE 108均包括經組配以經由視訊會議應用程式100執行雙向視訊會議之電路。
本端使用者102可放大顯示遠端攝影機之視野內的特定特徵或位置。在本端UE 106處，本端使用者102可界定遠端UE 108處之視野內之注意區域(ROI)110。在圖1之實例中，遠端攝影機之視野包括遠端使用者104之頭部及上部軀幹，而由本端使用者102界定之ROI 110僅包括遠端使用者104之頭部。此僅為一個實例；本端使用者102亦可界定在遠端攝影機之視野內的其他合適ROI。
一旦ROI 110經界定，視訊會議應用程式100即可引導遠端UE 108擷取ROI 110內之視訊。在一些實例中，遠端UE 108擷取僅包括ROI 110且排除ROI 110外之區域的視訊，且將所擷取視訊傳輸至本端UE 106。在其他實例中，遠端UE 108擷取包括遠端攝影機108之全部視野的視訊，但傳輸僅包括ROI 110且排除該ROI外之區域的視訊。
本端UE 106自遠端UE 108接收視訊，其中所接收視訊包括ROI 110內之區域且排除ROI 110外之區域。本端UE 106在本端顯示器上顯示所接收視訊。
在一些實例中，本端使用者102可界定ROI 110以具有遠端攝影機之視野內的任意大小及位置。在一些實例中，遠端UE 108在ROI 110經界定時保持靜止，使得選擇ROI 110不會使遠端攝影機之視野移動或改變。在一些實例中，本端使用者102可隨意地選擇新的ROI 110。在一 些實例中，遠端使用者104亦可選擇類似ROI以放大顯示本端使用者102。
在圖1之實例中，視訊會議應用程式100經由基於3GPP之多媒體電話服務而操作，該等服務使本端UE 106與遠端UE 108彼此連接且將該兩者連接至電話網路。此僅為一個實例；亦可使用其他合適網路。
本端UE 106經由無線電存取網路112、伺服GPRS支援節點(SGSN)114及/或閘道器GPRS支援節點(GGSN)116而連接至核心網路。本端UE 106經由代理呼叫工作階段控制功能(P-CSCF)118來發送及接收資料。P-CSCF利用伺服呼叫工作階段控制功能(S-CSCF)120來發送及接收資料。在一些實例中，S-CSCF 120可發送及接收來自應用程式伺服器(AS)122的資料，該應用程式伺服器可提供輔助服務，諸如呼叫保留/恢復、呼叫轉接及多方呼叫及其他服務。S-CSCF 120可發送及接收來自核心網路之其他部分的資料。遠端UE 108類似地與其自身之無線電存取網路124、SGSN 126、GGSN 128、P-CSCF 130、S-CSCF 132及AS 134通訊。S-CSCF 120、132可各自與質詢CSCF(I-CSCF)134通訊。I-CSCF 134可對本籍用戶伺服器(HSS)136及/或用戶位置功能(SLF)136進行讀取及寫入。
規範文件3GPP TS 26.114描述經由IMS之多媒體電話服務(MTSI)，其允許進階多媒體交談服務及內容經由基於IMS之網路的傳遞。此文件包括媒體處置及互動之規 範，其包括媒體控制、媒體編碼解碼器以及媒體及控制資料之輸送。MTSI呼叫使用呼叫工作階段控制功能(CSCF)機制在涉及該呼叫之UE之間投送控制面傳信(control-plane signalling)。基於MTSI之傳輸器UE終端機擷取並記錄視訊，且經由3GPP網路將視訊傳送至基於MTSI之接收器UE終端機，其解碼並顯現視訊。在MTSI中，工作階段起始協定(SIP)充當應用層控制協定，以建立、修改及終止交談式多媒體工作階段，諸如視訊會議、網際網路電話呼叫及其他服務。發送終端機與接收終端機之間的基於工作階段描述協定(SDP)之傳信顧及了媒體相關能力協商中之要約/回答考慮因素，包括編碼解碼器、位元速率、解析度及其他考慮因素。MTSI中之媒體之輸送係基於經由UDP/IP之即時輸送協定(RTP)(由IETF RFC 3550規定)。
擷取器件及因此壓縮視訊之解析度正快速地增加。舉例而言，使用最近的高效視訊寫碼(HEVC)標準，作為可操作產品之部分，吾人可輸送並儲存4K內容。具有4k乘2k之解析度之攝影機現可廣泛地獲得。實況串流視訊已證明具有8k乘4k之解析度。解析度(就像素之數目而言)在未來可能增加。在具有此等極高解析度內容的情況下，視訊串流之新用途現在係可能的，如互動式變焦特徵。
該等互動式變焦特徵允許實現視訊在頻寬、空間解析度、定向等方面之動態調適。另外，該等互動式變焦特徵可動態地切換至正串流傳輸之視訊中之使用者選定區，且可針對此目的最佳化編碼。
本文中所論述之器件及方法提議以交談式視訊服務為目標的新媒體處置及工作階段管理特徵，以增強當使用互動式變焦特徵時傳遞至終端使用者之解析度。詳言之，為了解決上述問題，吾人提議用以將關於使用者之ROI之資訊(例如)作為RTCP回饋傳信或RTP標頭延伸之部分自接收終端機傳信至發送終端機的能力。名為基於ROI之變焦(ROI變焦)之此特徵可提供選定區域之優於單純圖形變焦情況下的影像品質，此係因為在此情況下發送器件可將全部可用頻寬用於編碼及傳輸ROI，其因此可將較高位元速率及品質傳遞至接收終端機。
圖2說明用於視訊會議應用程式(諸如，圖1之視訊會議應用程式100)之傳信方案的實例。發送用戶端202經由工作階段描述協定(SDP)將指示基於ROI之串流的要約(offer)發送至接收用戶端204。接收用戶端204經由SDP回答且接受基於ROI之串流。接收用戶端204將ROI資訊發送至發送用戶端202，諸如，在RTCP回饋訊息中或在RTP標頭延伸中(針對反向視訊串流)。發送用戶端202基於所指示之ROI來編碼並傳輸視訊，可能在用於前向視訊串流之RTP標頭延伸中指示ROI。此僅為一個實例；亦可使用其他合適傳信方案。
發送終端機與接收終端機之間的基於SDP之傳信顧及了媒體相關能力協商中之針對ROI變焦的要約/回答考慮因素，例如，1)在RTCP回饋及/或RTP標頭延伸訊息中指示ROI之能力，及2)理解/處理ROI資訊且相應地編碼 視訊之能力。
支援ROI變焦特徵之MTSI用戶端可針對含有視訊之所有媒體串流在SDP中要約ROI變焦。可藉由包括a=extmap屬性來要約ROI變焦，該a=extmap屬性指示在相關媒體行範疇下之ROI變焦URN。舉例而言，ROI變焦URN可設定為：urn：3gpp：roi-zoom。
包括此URN之媒體行之實例為：a=extmap：7 urn：3gpp：roi-zoom
在媒體行之以上實例中，數字7可用1與14(包括)之間的任何數字替換。
可視用戶端在SDP能力協商期間如何協商以支援該特徵而雙向或單向地支援ROI變焦能力。對於具有不對稱能力(例如，處理ROI資訊，但不偵測/傳信ROI資訊之能力)的終端機，可使用僅發送(sendonly)及僅接收(recvonly)屬性。終端機應足夠清楚地表達其在每一方向上之能力，使得僅在信號皆表達有用資訊之程度上在每一方向上發送信號且可由接收端來處理信號。ROI變焦包括將接收使用者之當前ROI傳信至發送者，使得發送UE可最佳地編碼及傳輸所擷取視訊。當ROI變焦經成功協商時，其可由MTSI用戶端傳信。ROI變焦之傳信可使用RTCP回饋報告或RTP標頭延伸。
當使用RTCP回饋報告時，接收終端機將使用者之當前ROI資訊包括於該接收終端機正傳輸至發送終端機 的RTCP報告中。當使用RTP標頭延伸時，接收終端機將使用者之當前ROI資訊包括於該接收終端機正傳輸至發送終端機的RTP封包中。此等RTP封包載運反向上之視訊串流，該等視訊串流可用於MTSI中之雙向視訊通訊。
可經由不同URN在SDP要約中指示此等不同ROI傳信能力。在一些實例中，吾人可選取此等能力中之一者且在SDP能力協商中使用單一URN。由於RTCP並不總是用於視訊呼叫中且可被關閉(此亦為SDP協商之部分)，故為了最廣泛地支援ROI變焦特徵，將ROI資訊作為反向視訊串流之RTP標頭延伸之部分來進行傳遞可為最安全的。
兩個屬性可用以界定將包括於RTCP回饋報告或RTP標頭延伸中的ROI。一個屬性係位置，其可規定原始內容中被覆蓋之區之左上角，或可規定另一合適位置。另一屬性係大小，其可以相對值規定原始內容中被覆蓋之區之大小。舉例而言，位置之實例可為「0：0」，且大小之實例可為「0.33：0.33」。亦可使用其他合適值。
ROI變焦之存在不應影響發送終端機與接收終端機之間的經協商解析度(基於SDP imageattr屬性)。唯一區別在於，發送終端機將以協商解析度僅編碼ROI而非整個所擷取圖框，且此可導致比使接收終端機放大顯示ROI且裁切掉圖框之剩餘部分之情況下高的總解析度及較好的使用者體驗。發送終端機可潛在地將ROI指示為用於其前向視訊串流之RTP封包中之RTP標頭延伸之部分。
表1包括指示ROI變焦之SDP要約之實例。
表1 m=video 49154 RTP/AVP 99 a=tcap：1 RTP/AVPF a=pcfg：1 t=1 b=AS：315 b=RS：0 b=RR：2500 a=rtpmap：99 H264/90000 a=fmtp：99 packetization-mode=0；profile-level-id=42e00c；\ sprop-parameter-sets=J0LgDJWgUH6Af1A=,KM 46gA== a=imageattr：99 send[x=320,y=240][x=240,y=320]recv[x=320,y=240][x=240,y=320] a=rtcp-fb：* trr-int 5000 a=rtcp-fb：* nack a=rtcp-fb：* nack pli a=rtcp-fb：* ccm fir a=rtcp-fb：* ccm tmmbr a=extmap：4 urn：3gpp：roi-zoom表2包括接受ROI變焦之SDP回答之實例。
表2 m=video 49154 RTP/AVPF 99 a=acfg：1 t=1 b=AS：315 b=RS：0 b=RR：2500 a=rtpmap：99 H264/90000 a=fmtp：99 packetization-mode=0；profile-level-id=42e00c；\ sprop-parameter-sets=J0LgDJWgUH6Af1A=,KM 46gA==a=imageattr：99 send[x=320,y=240][x=240,y=320]recv[x=320,y=240][x=240,y=320] a=rtcp-fb：* trr-int 5000 a=rtcp-fb：* nack a=rtcp-fb：* nack pli a=rtcp-fb：* ccm fir a=rtcp-fb：* ccm tmmbr a=extmap：4 urn：3gpp：roi-zoom
雖然無線網路連接之先前實例係特定參考3GPP LTE/LTE-A、IEEE 802.11及藍芽通訊標準而提供，但將理解，多種其他WWAN、WLAN及WPAN協定及標準可與本文中所描述之技術結合使用。此等標準包括(但不限於)來自3GPP(例如，HSPA+、UMTS)、IEEE 802.16(例如，802.16p)或藍芽(例如，藍芽4.0或由藍芽特別興趣組(Bluetooth Special Interest Group)界定之類似標準)系列標準的其他標準。其他可應用網路組配可包括於目前描述之 通訊網路之範疇內。將理解，可使用任何數目個個人區域網路、LAN及WAN，使用有線或無線傳輸媒體之任何組合來促進此等通訊網路上之通訊。
上文所描述之實施例可實施於硬體、韌體及軟體中之一者或其組合中。各種方法或技術或該等方法或技術之特定態樣或部分可採用體現於有形媒體中之程式碼(亦即，指令)的形式，有形媒體諸如快閃記憶體、硬碟機、攜帶型儲存器件、唯讀記憶體(ROM)、隨機存取記憶體(RAM)、半導體記憶體器件(例如，電氣可規劃唯讀記憶體(EPROM)、電氣可抹除可規劃唯讀記憶體(EEPROM))、磁碟儲存媒體、光學儲存媒體，及任何其他機器可讀儲存媒體或儲存器件，其中，當程式碼被載入至一機器(諸如，電腦或網路連接器件)中且由該機器執行時，該機器成為用於實踐該等各種技術之裝置。
機器可讀儲存媒體或其他儲存器件可包括用於以機器(例如，電腦)可讀之形式儲存資訊之任何非暫時性機構。在程式碼在可程式化電腦上執行之情況下，計算器件可包括處理器、可由處理器讀取之儲存媒體(包括依電性及非依電性記憶體及/或儲存元件)、至少一輸入器件及至少一輸出器件。可實施或利用本文中所描述之各種技術的一或多個程式可使用應用程式設計介面(API)、可再使用控制項及其類似者。此等程式可以高階程序性或物件導向式程式設計語言來實施以與電腦系統通訊。然而，必要時，該(該等)程式可以組合語言或機器語言來實施。在任 何情況下，語言可為編譯或解譯語言，且與硬體實施組合。
圖4說明行動器件400的實例。行動器件400可為使用者設備(UE)、行動台(MS)、行動無線器件、行動通訊器件、平板電腦、手機或其他類型之行動無線計算器件。行動器件400可在外殼402內包括一或多個天線408，該一或多個天線經組配以與熱點、基地台(BS)、演進型節點B(eNodeB)或其他類型之WLAN或WWAN存取點通訊。行動器件400可經組配以使用多個無線通訊標準(包括選自3GPP LTE、WiMAX、高速封包存取(HSPA)、藍芽及Wi-Fi標準定義之標準)進行通訊。行動器件400可使用用於每一無線通訊標準之單獨天線或用於多個無線通許標準之共用天線進行通訊。行動器件400可在WLAN、WPAN及/或WWAN中進行通訊。
圖4亦展示來自行動器件400的可用於音訊輸入及輸出之麥克風420及一或多個揚聲器412。顯示幕404可為液晶顯示(LCD)幕，或其他類型之顯示幕，諸如有機發光二極體(OLED)顯示器。顯示幕404可組配為觸控螢幕。觸控螢幕可使用電容性、電阻性或另一類型之觸控螢幕技術。應用程式處理器414及圖形處理器418可耦接至內部記憶體416以提供處理及顯示能力。非依電性記憶體埠410亦可用以為使用者提供資料輸入/輸出選項。非依電性記憶體埠410亦可用以擴展行動器件400之記憶能力。鍵盤406可與行動器件400整合或以無線方式連接至行動器件400， 以提供額外使用者輸入。亦可使用觸控螢幕來提供虛擬鍵盤。位於行動器件400的前(顯示幕)側或後側上之攝影機422亦可整合至行動器件400之外殼402中。
圖5為說明本文中所論述之方法中之任一或多者可在其上執行的實例電腦系統機器500的方塊圖。電腦系統機器500可體現為本端UE 106、遠端UE 108或本文中所描述或提及之任何其他計算平台。在替代實施例中，該機器作為獨立器件而操作，或可連接(例如，網路連接)至其他機器。在網路連接部署中，該機器可在伺服器-用戶端網路環境中作為伺服器或用戶端機器之任一者操作，或該機器可在同級間(或分散式)網路環境中充當同級機器。該機器可為攜帶型或並非攜帶型之個人電腦(PC)(例如，筆記型電腦或迷你筆記型電腦)、平板電腦、機上盒(STB)、遊戲主機、個人數位助理(PDA)、行動電話或智慧型電話、網路器具、網路路由器、交換器或橋接器，或能夠執行指定將由該機器進行之動作之指令(順序的或以其他方式)之任何機器。此外，雖然僅說明單一機器，但「機器」一詞亦應視為包括個別地或聯合地執行(多個)指令集合以執行本文中所論述之方法中之一或多者的機器之任何集合。
實例電腦系統機器500包括經由互連件508(例如，鏈路、匯流排等)相互通訊的處理器502(例如，中央處理單元(CPU)、圖形處理單元(GPU)或兩者)、主記憶體504及靜態記憶體506。電腦系統機器500可進一步包括視訊顯示單元510、文數字輸入器件512(例如，鍵盤)及使用者介 面(UI)導覽器件514(例如，滑鼠)。在一個實施例中，視訊顯示單元510、輸入器件512及UI導覽器件514為觸控螢幕顯示器。電腦系統機器500可另外包括儲存器件516(例如，碟機單元)、信號產生器件518(例如，揚聲器)、輸出控制器532、電力管理控制器534及網路介面器件520(其可包括一或多個天線530、收發器或其他無線通訊硬體或可操作地與一或多個天線530、收發器或其他無線通訊硬體通訊)，及諸如全球定位感測器(GPS)感測器、羅盤、位置感測器、加速計或其他感測器之一或多個感測器528。
儲存器件516包括機器可讀媒體522，該機器可讀媒體上儲存有體現本文中所描述之方法或功能中之任何一或多者或供本文中所描述之方法或功能中之任何一或多者利用之資料結構及指令524(例如，軟體)之一或多個集合。指令524在該等指令由電腦系統機器500執行期間亦可完全或至少部分地駐留於主記憶體504、靜態記憶體506內及/或處理器502內，其中主記憶體504、靜態記憶體506及處理器502亦構成機器可讀媒體。
雖然在實例實施例中將機器可讀媒體522說明為單一媒體，但「機器可讀媒體」一詞可包括儲存一或多個指令524之單一媒體或多個媒體(例如，集中式或分散式資料庫，及/或相關聯的快取記憶體及伺服器)。「機器可讀媒體」一詞亦應被視為包括任何有形媒體，其能夠儲存、編碼或載運供機器執行之指令且使機器執行本發明之方法中之任何一或多者，或能夠儲存、編碼或載運供此等指令利 用或與此等指令相關聯之資料結構。
可進一步經由利用許多熟知傳送協定中之任一者(例如，HTTP)之網路介面器件520使用傳輸媒體在通訊網路526上傳輸或接收指令524。「傳輸媒體」一詞應被視為包括能夠儲存、編碼或載運供機器執行之指令之任何無形媒體，且包括用以促進此軟體之傳達之數位或類比通訊信號或其他無形媒體。
應理解，本說明書中所描述之功能單元或能力可已被稱為或標記為組件或模組，以便更特定地強調該等功能單元或能力之實施獨立性。舉例而言，組件或模組可實施為包含定製超大型積體(VLSI)電路或閘陣列、諸如邏輯晶片、電晶體之現成半導體或其他離散組件的硬體電路。組件或模組亦可實施於諸如場可程式化閘陣列、可程式化陣列邏輯、可程式化邏輯器件或其類似者的可程式化硬體器件中。組件或模組亦可實施於供各種類型之處理器執行之軟體中。可執行程式碼之經識別組件或模組可(例如)包含可(例如)組織為物件、程序或函式的電腦指令之一或多個實體或邏輯區塊。儘管如此，經識別組件或模組之可執行程式碼不必實體上位於一處，而是可包含儲存於不同位置中之不同指令，該等指令在邏輯上接合在一起時組成該組件或模組且達成該組件或模組之規定用途。
實際上，可執行程式碼之組件或模組可為單一指令或許多指令，且甚至可分散在若干不同程式碼段上、分散在不同程式之間及跨越若干記憶體器件。類似地，操 作資料可在本文中被識別且說明為在組件或模組內，且可以任何合適形式體現且組織在任何合適類型之資料結構內。操作資料可經收集作為單一資料集，或可分散在不同位置上(包括分散在不同儲存器件上)，且可至少部分地、僅作為系統或網路上之電子信號而存在。該等組件或模組可為被動的或主動的，包括可操作以執行所要功能之代理程式。
目前所描述之方法、系統及器件實施例之額外實例包括以下非限制性組配。以下非限制性實例中之每一者可以獨立，或可與下文或貫穿本發明所提供之其他實例之任何一或多者以任何排列或組合來進行組合。
實例1包括藉由下者體現之標的：一種由一本端使用者設備(本端UE)執行的用於在提供該本端UE與一遠端使用者設備(遠端UE)之間的雙向視訊通訊之一視訊會議應用程式內變焦的方法，該方法包括：在該本端UE處界定該遠端UE處之一視野內的一使用者界定之注意區域(ROI)；引導該遠端UE擷取該ROI內之視訊；在該本端UE處接收來自該遠端UE之該所擷取視訊，該所接收視訊包括該ROI內之區域且排除該ROI外之區域；以及在該本端UE處顯示該所接收視訊。
在實例2中，如實例1之標的可視情況包括實例1之方法，其中引導該遠端UE擷取該ROI內之視訊包括：在RTCP回饋報告中指示該ROI；以及將該等RTCP回饋報告發送至該遠端UE。
在實例3中，如實例1之標的可視情況包括，其中引導該遠端UE擷取該ROI內之視訊包括：擷取該本端UE處之本端視訊；將該ROI嵌入於該所擷取本端視訊中之至少一RTP標頭延伸中；以及將該所擷取本端視訊與該嵌入之至少一RTP標頭延伸一起發送至該遠端UE。
在實例4中，如實例3之標的可視情況包括，該至少一RTP標頭延伸包括一位置及一大小，該位置及該大小界定該ROI。
在實例5中，如實例4之標的可視情況包括，其中該位置包括指示在該遠端UE處之該視野內之該ROI的一角落位置的兩個位置值。
在實例6中，如實例5之標的可視情況包括，其中該兩個位置值經正規化以指示二維相對位置。
在實例7中，如實例4至實例6中之一者或任何組合之標的可視情況包括，其中該大小包括指示在該遠端UE處之該視野內之該ROI的一大小的兩個大小值。
在實例8中，如實例7之標的可視情況包括，其中該兩個大小值經正規化以指示二維相對大小。
在實例9中，如實例1至實例8中之一者或任何組合之標的可視情況包括，其中該ROI包括可變數目個像素；且其中該所接收視訊具有與該ROI中之像素之該數目成反比之一可變再新速率。
在實例10中，如實例1至實例9中之一者或任何組合之標的可視情況包括，其中該ROI包括固定數目個像 素；且其中該所接收視訊具有一恆定再新速率。
實例11包括藉由一種使用者設備(UE)體現之標的，該UE包括：經組配以執行該UE與一遠端使用者設備(遠端UE)之間的雙向視訊會議之電路，該電路經配置以：在該UE處界定該遠端UE處之一視野內的一使用者界定之注意區域(ROI)；引導該遠端UE擷取該ROI內之視訊；在該UE處接收來自該遠端UE之該所擷取視訊，該所接收視訊包括該ROI內之區域且排除該ROI外之區域；以及在該UE處顯示該所接收視訊。
在實例12中，如實例11之標的可視情況包括如實例1之方法，其中引導該遠端UE擷取該ROI內之視訊包括：在RTCP回饋報告中指示該ROI；以及將該等RTCP回饋報告發送至該遠端UE。
在實例13中，如實例11之標的可視情況包括，其中引導該遠端UE擷取該ROI內之視訊包括：擷取該本端UE處之本端視訊；將該ROI嵌入於該所擷取本端視訊中之至少一RTP標頭延伸中；以及將該所擷取本端視訊與該嵌入之至少一RTP標頭延伸一起發送至該遠端UE。
在實例14中，如實例13之標的可視情況包括，其中該至少一RTP標頭延伸包括一位置及一大小，該位置及該大小界定該ROI。
在實例15中，如實例14之標的可視情況包括，其中該位置包括指示在該遠端UE處之該視野內之該ROI的一角落位置的兩個位置值。
在實例16中，如實例15之標的可視情況包括，其中該兩個位置值經正規化以指示二維相對位置。
在實例17中，如實例14至實例16中之一者或任何組合之標的可視情況包括，其中該大小包括指示在該遠端UE處之該視野內之該ROI的一大小的兩個大小值。
在實例18中，如實例17之標的可視情況包括，其中該兩個大小值經正規化以指示二維相對大小。
在實例19中，如實例11至實例18中之一者或任何組合之標的可視情況包括，其中該ROI包括可變數目個像素；且其中該所接收視訊具有與該ROI中之像素之該數目成反比之一可變再新速率。
在實例20中，如實例11至實例19中之一者或任何組合之標的可視情況包括，其中該ROI包括固定數目個像素；且其中該所接收視訊具有一恆定再新速率。
實例21包括藉由下者體現之標的：一種由一本端使用者設備(本端UE)執行的用於在提供該本端UE與一遠端使用者設備(遠端UE)之間的雙向視訊通訊之一視訊會議應用程式內變焦的方法，該方法包括：在該本端UE處界定該遠端UE處之一視野內的一使用者界定之注意區域(ROI)；擷取該本端UE處之本端視訊；將該ROI嵌入於該所擷取本端視訊中之至少一RTP標頭延伸中；以及將該所擷取本端視訊與該嵌入之至少一RTP標頭延伸一起發送至該遠端UE，該至少一RTP標頭延伸包括一位置及一大小，該位置及該大小界定該ROI，該位置包括指示在該遠端UE處之 該視野內之該ROI的一角落位置的兩個位置值，該大小包括指示在該遠端UE處之該視野內之該ROI的一大小的兩個大小值；引導該遠端UE擷取該ROI內之視訊；在該本端UE處接收來自該遠端UE之該所擷取視訊，該所接收視訊包括該ROI內之區域且排除該ROI外之區域；以及在該本端UE處顯示該所接收視訊。
提供發明摘要以允許讀者確定技術揭示內容之性質及主旨。在理解發明摘要將不用以限制或解譯申請專利範圍之範疇或意義的情況下提交發明摘要。以下申請專利範圍特此併入至實施方式中，其中每一技術方案獨立地作為單獨實施例。

Claims (15)

  1. 一種以經由IP多媒體子系統(IMS)之一多媒體電話服務(MTSI)為基礎的使用者設備(UE)之裝置，該UE可組配用於視訊注意區域(ROI)傳信以及操作作為一MTSI發送器，該裝置包含：記憶體；以及處理電路經組配以：執行與一MTSI接收器之一工作階段描述協定(SDP)能力協商；傳信用於該MTSI接收器在即時傳送協定(RTP)封包中的一第一ROI之視訊注意區域(ROI)資訊；解碼來自該MTSI接收器之已接收的RTP酬載封包，該等RTP酬載封包包含對應於該第一ROI之視訊；解碼在RTCP回饋報告中所接收的請求一第二ROI之傳信，該第二ROI在該SDP能力協商期間被提供，該RTCP回饋報告接收來自該MTSI接收器，該第二ROI為在該SDP能力協商期間所提供的該MTSI發送器之一預定義的ROI；以及編碼在傳輸至該MTSI接收器之RTP酬載封包中用於對應該第二ROI的視訊。
  2. 如請求項1之裝置，其中該處理電路經組配以編碼用於傳輸至該MTSI接收器之對應於一所擷取圖框的該第二ROI之視訊，以及避免編碼該所擷取圖框之該第二ROI之外的視訊。
  3. 如請求項1之裝置，其中當操作在遠端攝影控制模式時，該處理電路經組配以傳信用於該MTSI接收器在RTP封包中的該第一ROI之該視訊ROI資訊，該等RTP封包包括至少一變焦命令來擷取該MTSI接收器之一被請求的ROI。
  4. 如請求項1之裝置，其中當操作在遠端攝影控制模式時，該處理電路經組配以傳信用於該MTSI接收器在RTP封包中的該第一ROI之該視訊ROI資訊，該等RTP封包包括至少一變焦命令來擷取一被請求的注意區域，而不改變該MTSI接收器之一視野(FOV)。
  5. 如請求項1之裝置，其中該處理電路經組配以編碼在傳輸至該MTSI接收器之RTP酬載封包中用於對應該第二ROI的視訊，而不改變該MTSI發送器之一視野(FOV)。
  6. 如請求項1之裝置，其中該處理電路進一步經組配以當該MTSI接收器解碼對應該第二ROI的視訊時，解碼用於在從該MTSI接收器所接收之RTCP回饋報告中的該第二ROI的傳信。
  7. 如請求項6之裝置，其中用以傳信該視訊ROI資訊至該MTSI接收器，該處理電路經組配以編碼用於傳輸至該MTSI接收器之在RTP封包中的該第一ROI之該視訊ROI資訊。
  8. 如請求項7之裝置，其進一步包含一影像攝錄器介面來接收對應於該第二ROI之被擷取的視訊。
  9. 如請求項8之裝置，其進一步包含一顯示器介面來接收經解碼之從該MTSI接收器所接收用於顯示的已接收之RTP酬載封包。
  10. 一種非暫時性電腦可讀儲存媒體，其儲存用於藉由以經由IP多媒體子系統(IMS)之一多媒體電話服務(MTSI)為基礎的使用者設備(UE)之處理電路實行的指令，該UE可組配用於視訊注意區域(ROI)傳信以及操作作為一MTSI發送器，該等指令用以組配該處理電路來：執行與一MTSI接收器之一工作階段描述協定(SDP)能力協商；傳信用於該MTSI接收器在即時傳送協定(RTP)封包中的一第一ROI之視訊注意區域(ROI)資訊；解碼來自該MTSI接收器之已接收的RTP酬載封包，該等RTP酬載封包包含對應於該第一ROI之視訊；解碼在RTCP回饋報告中所接收的請求一第二ROI之傳信，該第二ROI在該SDP能力協商期間被提供，該RTCP回饋報告從該MTSI接收器被接收，該第二ROI為在該SDP能力協商期間所提供的該MTSI發送器之一預定義的ROI；以及編碼在傳輸至該MTSI接收器之RTP酬載封包中用於對應該第二ROI的視訊。
  11. 如請求項10之非暫時性電腦可讀儲存媒體，其中該處理電路經組配以編碼用於傳輸至該MTSI接收器之對應於一所擷取圖框的該第二ROI之視訊，以及避免編碼該所擷取圖框之該第二ROI之外的視訊。
  12. 如請求項10之非暫時性電腦可讀儲存媒體，其中當操作在遠端攝影控制模式時，該處理電路經組配以傳信用於該MTSI接收器在RTP封包中的該第一ROI之該視訊ROI資訊，該等RTP封包包括至少一變焦命令來擷取該MTSI接收器之一被請求的ROI。
  13. 如請求項10之非暫時性電腦可讀儲存媒體，其中當操作在遠端攝影控制模式時，該處理電路經組配以傳信用於該MTSI接收器在RTP封包中的該第一ROI之該視訊ROI資訊，該等RTP封包包括至少一變焦命令來擷取一被請求的注意區域，而不改變該MTSI接收器之一視野(FOV)。
  14. 如請求項10之非暫時性電腦可讀儲存媒體，其中該處理電路經組配以編碼在傳輸至該MTSI接收器之RTP酬載封包中用於對應該第二ROI的視訊，而不改變該MTSI發送器之一視野(FOV)。
  15. 一種藉由以經由IP多媒體子系統(IMS)之一多媒體電話服務(MTSI)為基礎的使用者設備(UE)之處理電路所執行的方法，該UE可組配用於視訊注意區域(ROI)傳信以及操作作為一MTSI發送器，該方法包含：執行與一MTSI接收器之一工作階段描述協定(SDP)能力協商；傳信用於該MTSI接收器在即時傳送協定(RTP)封包中的一第一ROI之視訊注意區域(ROI)資訊；解碼來自該MTSI接收器之已接收的RTP酬載封包，該等RTP酬載封包包含對應於該第一ROI之視訊；解碼在RTCP回饋報告中所接收的請求一第二ROI之傳信，該第二ROI在該SDP能力協商期間被提供，該RTCP回饋報告從該MTSI接收器被接收，該第二ROI為在該SDP能力協商期間所提供的該MTSI發送器之一預定義的ROI；以及編碼在傳輸至該MTSI接收器之RTP酬載封包中用於對應該第二ROI的視訊。
TW106102708A 2013-04-26 2014-04-16 可組配用於視訊注意區域（ｒｏｉ）傳信之以經由ｉｍｓ之多媒體電話服務（ｍｔｓｉ）為基礎的使用者設備（ｕｅ）（二） TWI635751B (zh)

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