Thousands of HD fixed and PTZ cameras from Hikvision have been installed in Shanghai Pudong District, China, the setting for World Expo 2010. The six-month-long event revived the tradition of world fairs and expositions of the kind staged in Chicago (1893) and St Louis (1904), a year in which the extravaganza also played host to the Olympic Games.
Hikvision’s equipment was charged with securing this world showcase by the Huangpu River in which exhibiting countries promoted national identity in their pavilions. The theme of the US pavilion was "Rising to the Challenge", with American innovation and community-building being represented in a multi-dimensional presentation. The UK pavilion, named the 'Seed Cathedral', was constructed from 60,000 seven-metre-long aluminium rods. An exhibit that attracted particular interest was the Saudi Arabian pavilion which featured a hanging boat shaped like a half moon, complete with live date palms on the top deck.
Expo 2010 Shanghai China was a $4bn festival set to receive 100 million visitors by October. Visitors came from 190 countries to an exhibition site of 3.2 square miles, this being twice the size of the country of Monaco (equivalent to 1,000 soccer pitches) and featuring buildings shaped like rabbits alongside violin-playing robots. The exhibition even featured Copenhagen’s 'Little Mermaid' who travelled from Denmark for the event.
The Expo prompted a city-wide infrastructure makeover of $45bn, and in keeping with the scale of the enterprise, the exhibition site benefited from the world’s largest scale high-definition city surveillance project with 12,000 monitoring points covering the infrastructure of the Pudong district of Shanghai. Thousands of HD fixed and PTZ cameras from Hikvision have been used on the project.
HD video in real-time
The project is the world’s largest provision of high-definition video, with footage being provided to police at a central monitoring facility. A specification of the client was that cameras should give users the ability to track and zoom in on individuals or vehicles so that facial details and license plates could be observed, requirements that made major demands on product performance and system design.
The IP cameras from Hikvision adopted for the Expo feature a 1/1.8 inch SONY progressive scan CCD. Hikvision’s H.264 video compression codec has been used and redundancy is provided by SD/SDHC local card storage.
Pushing the boundaries
In the past, it had not been possible to view specific details of people or vehicles clearly from footage provided by the legacy analogue cameras being used in the Pudong area. People or objects involved in emergencies or significant incidents have proved difficult to identify, so handicapping police officers who need to conduct criminal investigations and logistical analysis.
Hikvision, with its track record in video technology development, supplied HD cameras that met the project requirements, delivering HD video with resolution of up to 1600x1200 pixels in real time. With the addition of Hikvision’s image signal processing technology, the video quality has exceeded all expectations.
To achieve wide area monitoring, the original system often employed many analogue cameras across a single zone. For instance, at a crossroads there may have been a requirement for three or four cameras to monitor traffic flow across multiple lanes. By contrast, a single HD camera has covered a whole intersection with better image detail. Economies in installation and simplification of management processes have been significant.