【安防知識(shí)網(wǎng)】百萬(wàn)像素和高清視頻監(jiān)控設(shè)備的增長(zhǎng)和應(yīng)用，將成為至2014年前視頻監(jiān)控設(shè)備市場(chǎng)發(fā)展最為關(guān)鍵的趨勢(shì)之一。IMS Research通過(guò)最新發(fā)布的“全球模擬視頻監(jiān)控和視頻監(jiān)控市場(chǎng)，2010年版”報(bào)告中指出，到2014年將有超過(guò)50%的在售網(wǎng)絡(luò)攝像機(jī)達(dá)到高清與百萬(wàn)像素的分辨率。

　　網(wǎng)絡(luò)攝像機(jī)優(yōu)勢(shì)之一是其可以達(dá)到百萬(wàn)像素的分辨率，而這正是模擬攝像機(jī)目前無(wú)法實(shí)現(xiàn)的。然而，近來(lái)隨著HDcctv聯(lián)盟的發(fā)展，可以預(yù)見(jiàn)在指定百萬(wàn)像素和高清監(jiān)控要求下，終端用戶擁有了更多的選擇。

　　雖然在新的企業(yè)級(jí)項(xiàng)目實(shí)施中運(yùn)用網(wǎng)絡(luò)視頻監(jiān)控的比例正在提高，但是在現(xiàn)有的視頻監(jiān)控設(shè)備中，模擬仍然占據(jù)主導(dǎo)地主，代表了大多數(shù)的安裝基礎(chǔ)。未來(lái)幾年市場(chǎng)在這部分將變得最為有趣：客戶是會(huì)重新使用現(xiàn)有的模擬設(shè)施還是投資HDcctv，或是轉(zhuǎn)而使用網(wǎng)絡(luò)攝像機(jī)，亦或是采用混合系統(tǒng)呢?

　　擁護(hù)高清視頻監(jiān)控者一致認(rèn)為視頻監(jiān)控系統(tǒng)將從模擬視頻轉(zhuǎn)換到網(wǎng)絡(luò)系統(tǒng)。然而，在拓?fù)浣Y(jié)構(gòu)需要上卻出現(xiàn)了分歧。對(duì)于希望獲得高清和百萬(wàn)像素視頻的用戶來(lái)說(shuō)，這是可以做到用一個(gè)“純”網(wǎng)絡(luò)視頻解決方案或是使用HDcctv模擬視頻監(jiān)控解決方案，帶來(lái)了一個(gè)以太網(wǎng)上使用網(wǎng)絡(luò)數(shù)據(jù)功能的DVR。

　　“HDcctv攝像機(jī)將在短期內(nèi)將不會(huì)影響IP攝像機(jī)的成長(zhǎng)”，研究報(bào)告的撰寫(xiě)者、視頻監(jiān)控研究分析師Gary Wong總結(jié)道，“許多大型和知名的視頻監(jiān)控設(shè)備廠商已紛紛投入大量的資金開(kāi)發(fā)和銷(xiāo)售網(wǎng)絡(luò)攝像機(jī)。在不久的將來(lái)，這些供應(yīng)商調(diào)整他們的技術(shù)方法和營(yíng)銷(xiāo)信息來(lái)容納HDcctv產(chǎn)品進(jìn)入他們的產(chǎn)品組合的可能性很小“。知名品牌對(duì)HDcctv的曝光力度的不足將對(duì)HDcctv設(shè)備在企業(yè)級(jí)項(xiàng)目中的銷(xiāo)售不利。盡管如此，HDcctv攝像機(jī)仍然潛在地制約著網(wǎng)絡(luò)攝像機(jī)市場(chǎng)增長(zhǎng)。Wong繼續(xù)說(shuō)道，“HDcctv可獲得低收入和中等收入的市場(chǎng)份額。服務(wù)這部分市場(chǎng)安全系統(tǒng)的多為一些較小的、地方和區(qū)域性的安全系統(tǒng)安裝商，他們對(duì)網(wǎng)絡(luò)攝像機(jī)認(rèn)知度較少。而HDcctv則允許工程商可以在不必超出他們知識(shí)能力范圍的傳統(tǒng)技術(shù)領(lǐng)域里就能為客戶提供高清的便利。

　　盡管HDcctv存在這些潛在的影響， 但是IMS Research預(yù)測(cè)到2014年高清和百萬(wàn)像素網(wǎng)絡(luò)攝像機(jī)全球出貨量將超過(guò)HDcctv，銷(xiāo)售比達(dá)6：1。

[nextpage]【原文】 The growth and adoption of megapixel and high definition (HD) video surveillance equipment is one of the key trends shaping the video surveillance market towards 2014. According to IMS Research’s latest report, “The World Market for CCTV and Video Surveillance Equipment – 2010 Edition”, by 2014 more than 50% of all network cameras shipped will be HD or megapixel resolution.

　　One of the main benefits of network security cameras has been the availability of megapixel (and more recently HD) resolutions, a feature that until recently analogue video surveillance products had been unable to offer. However, recent developments from the HDcctv Alliance, the organisation responsible for developing the high definition over coax standard (based on the industry HD-SDI broadcast standard), could see end-users given a greater choice when specifying megapixel and HD surveillance requirements.

　　Whilst a high proportion of new, enterprise-class projects are implementing network video security, existing video surveillance installations, which are predominantly analogue, still represent a majority of the installed base. It is this sector of the market which will be most interesting in the coming years; will customers reuse their existing analogue infrastructure and invest in HDcctv, transition to network security cameras, or adopt a hybrid system?

　　There appears to be little disagreement between protagonists of high definition video surveillance that video surveillance systems are transitioning from analogue video to networked systems; however, there is discord regarding the system topology needed to achieve this. For customers looking to capture high definition and megapixel video, this can be done using a “pure” network video solution or by using an HDcctv analogue video surveillance solution that brings the data onto the network using an Ethernet enabled DVR.

　　“HDcctv cameras will not impact the uptake of IP cameras in the short term”, states report author and video surveillance research analyst Gary Wong. “Many large and well-known vendors of video surveillance equipment have already invested heavily in developing and marketing network security cameras. It is unlikely that these vendors will adjust their technology roadmaps and marketing messages to accommodate HDcctv products into their product portfolios in the near future”. The lack of recognised brand exposure will prove detrimental to HDcctv equipment sales at the enterprise-class project level. However, HDcctv cameras could potentially limit the available market for network security cameras. Wong continues, “HDcctv may gain traction in the low and middle segments of the market. These market segments are serviced by small, local and regional security systems installers who have generally been slow to embrace network security cameras. HDcctv allows installers to offer the benefits of HD to their customers without having to operate outside of their technical comfort zone”.

　　Despite the potential impact of HDcctv, IMS Research forecasts that by 2014 worldwide shipments of HD and megapixel network security cameras will outnumber sales of HDcctv cameras by a factor of 6 to 1.