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When you work in the virtual tour business, you have the privilege to witness technological advances almost daily.
But every once in a while these changes combine to create an effect that can only be described as a Game Changer.
Today we are proud to share such an culmination of technological advances.

For a lack of a better word: we’ll call it a Hyper Definition Virtual Tour , but before we get to the technical details, have a look at it:

Virtual Africa presents: The highest definition picture ever taken of Cape Town.

It might not look like much on first glance, but try the following and be ready to be blown away: click on the full screen button (bottom right) and then ZOOM !!

Some details as to the size of this image:

  • It was created by stitching 1850,fully zoomed (x 20 optical zoom), 10 MegaPixel images together.
  • The time it took from the first shot (top left) and last shot (lower right) being taken, was about 3 hours.
  • It’s 205 000 pixels wide.
  • That equates to a printout of about 90 m x 15 m!
  • The end result was a 25 GigaBytes RAW file which takes about an hour to open on my Macbook Pro.

Despite the size of the image, you can view it here because of a method called ’tiling’.

It works exactly the same way as mapping platforms such as Google Maps.

for example: When you view the whole of South Africa in Google Maps, the image obviously does not contain the high detail imagery of every roof top in the country. It’s only when you start zooming in, that Google Maps loads the relevant information.

The same happens here. We’ve taken our very big picture and created hundreds of thousand lower definition pictures (or tiles) from it. As you zoom into the picture, the only the appropriate tiles are loaded and this allows you to explore a very large image on a relatively slow internet connection. Simple, but smart.

In the coming months we hope to use images like these to organize data, visually.

Once again, similar to Google Maps, we can overlay information on top of this image to further enhance your exploration of Cape Town and the good news is that we are currently working on a few projects which will allow us to do just that.

In the mean time, we would love to hear your suggestions as to what we should call this kind of image/virtual tour…..

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Google Street View is coming to South Africa and it seems people are unsure if they should be terrified or excited.

In an effort to make some sense of the issue, I’ve decided to write a few words on the following :

1. What is Street View and how does Google create it?
2. What are the privacy concerns surrounding Google Street View?
3. A personal perspective on privacy.

What is Google Street View?

Google Street View is an extension of the very popular Google Maps.
It allows users to ‘go down to street level’ and see what it looks like at a particular spot on a map.

Broken down to its simplest building block, it consists of interactive panoramic images placed on the exact spot they were taken from. (Or in tech jargon: geo-located, interactive,  immersive imaging.)

These images become extremely informative and powerful because Google has created the ability to generate hundreds of thousands of them, each +- 10 m from the next.

Strung together, the panoramic images allow you to take a virtual walk or drive down a street in New York, London, and soon, Cape Town and Johannesburg.

It allows the user to experience and interact with a place/location while sitting behind a computer. Like such:

How does Google capture the Street View images?

Google started out licensing the panoramic content from a company called Immersive Media. Immersive Media actually captured 360 degree video and the extracted frames from the video to create their panoramic images.
Google and Immersive Media have since parted ways and Google has built their own camera system, which can be seen mounted on top of a Toyota Prius in this picture:

google-street-view-south-africa

Not much is known about the particular specs for the current Street View cameras, but the basic principle is to have  a bunch of fairly wide angled lenses pointing in different directions.

A GPS unit then triggers the cameras to take a shot at specified distances and the resulting images are stitched together to create a spherical panorama.

(Off course it’s a bit more technical than that and we can be sure that lasers are used to gather very accurate data about the landscape and buildings and that they might even be taking 360 degree video in the process …. but that’s a topic for another post.)

What are the privacy concerns surrounding Google Street View?

Most of the ‘arguments’ put forward on the internet  fall into three categories:

1. People aggrieved by the fact that they are captured in places they don’t want other people to know they were.

- the guy passed out on the street after a heavy night out
- the women going to a shelter/center for domestic abuse
- the man entering the sex shop  (by the way: these are all referring to real examples)

2.  People feeling the privacy of their homes/neighbourhoods are intruded upon:

- some are uncomfortable about the idea of the whole world being able to ’drive down their street’
- others feel that “the government could see the books on their shelves” and use the information to discriminate against them (as reported in this New York Times post)

3. People worried about criminals using the imagery to plan crimes.

- scanning a street for houses with ’security vulnerebilities’
- seeing toys in the drive way could give them clues about the fact that there are children living in the house

My take on the privacy concerns:

To be honest, I was quite disappointed to see the weak arguments against Google Street View put forward on several blogs and particular in mainstream media.

People were quoted as saying silly things like: “What if they make it real time? “  – without reporters pointing out that it’s impossible.

Also, being afraid of a static image that might capture the books on your shelves, while Google and your Internet service provider can track almost every site you visit on the Internet is a bit … let’s say : unbalanced.
Add to that the fact that most major cities have almost every square inch covered with CCTV camera’s and that there are in fact people in dark rooms looking at satellite images of much higher quality  than Google Earth, then most of the arguments seem to fall flat.

Public space is public space and when you decide to visit an adult books store in a public space, you should know that there is the risk that someone might see or capture you – manage your risk and handle the responsibility that comes with your right to freedom of association.

In short, if you don’t want to get captured passed out on the side walk – don’t get passed out on the side walk.

Yes, it is your right to pass out on a (public) side walk, but if you do so – be a grown up and take responsibility for exercising that right.

That been said …… as a question of law and ethics, there is always the guideline of what a ‘reasonable man’ (or woman) would do or would expect in a specific situation and it is here where Google does overstep a very sacred boundary.

Yes, they try and blur the faces of people and number plates in the pictures and do have a ‘report this picture’ on every image as well, but I do feel that they could and should go a decent, lets say reasonable, step further.

I’ll take myself as an example to illustrate:
I have the privilege of living in a ‘leafy neigbourhood’. Our house does not have a wall around it (another privilege), but we’re lucky enough to have a row of large trees on the boundry of the property.
The effect is that although you can see into my bedroom from the road, you can only do so from one or two specific places and even then, you’ll have to be 3 meters tall.

Because I know this and am a reasonably lazy man, I simply take a quick peak through the window before I change my clothes or jump into the shower.
Although there are usually some cars driving by, there is no way anybody will be able to see me or take a picture of me if they don’t stop at exactly the right spot and have a high definition, quick firing camera elevated to about 3 meters.

Being a reasonable man, I know that no-one would do that…..

Except – that is exactly what Google Street View does and it can leave a reasonable man, like myself, in a difficult position.

So – I am of opinion that Street View can be intrusive and that there is some merit to those who feel their privacy is at stake. The solution though is not to throw the proverbial baby out with the bath water and and ban Google Street View, it’s simply to let people like me know that Google will be driving down my street with an ‘unreasonably’ high-end camera today.

Two arguments against this suggestion are:

1. It is practically and financially impossible to contact everyone in a neighbourhood before you move through.
Well, that is Google’s problem and I’m sure they can find a solution if we ‘ask’ them to do so.
Putting up notice boards informing residents will go a long way and allow Google to engage with local real estate agencies – which will be mutually benificial in the long run anyway.

2. It does not ‘protect’ me when I’m in a public place other than my neigbourhood street, because I don’t need or want to keep track of where Google is drving today.
In the odd case that you are ‘caught’ doing something you would not want others to see, first, grow up and take responsibility, and secondly, as soon as Google Maps releases Street View, go check out every strip club and adult book store to see if you were captured – and flag the image so that Google knows you take offense – they will take it down.

In summary….

I’m of the opinion that Google Street View is a MARVELOUS innovation.
That it’s a great tool to enhance industries like tourism and real estate.

That South Africans should be excited at the opportunity of showcasing our beauty and diversity to the world and that we’ll finally be able to prove that there are in fact no lions in the streets.

I am also of the opinion that Google could have and should go through a bit more trouble to engage with local communities and respect their privacy by disclosing exactly what they are doing and when they plan to do it.
It is the right thing to do and they will get a great return on investment in terms of word of mounth marketing and even greater uptake in terms of the use of Google Maps.

In the mean time, I promise to draw my curtains when changing clothes…. the public has rights too, you know.

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Mapungubwe Rock Art

Published on 22 September 2009 by Tinus le Roux in Virtual Tours of South Africa

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Many South Africans take rock art for granted, but if you stop and think about it for minute…….these paintings are extraordinary .

The Mona Lisa was painted about 500 years ago and today hangs in a climate controlled secure room in Paris.

These paintings at Alfred’s Rock in the Mapungubwe World Heritage site were created +-3000 years ago and have been outside since.(If you’ve had the privilege to experience a summer day and a winter’s night in Africa – you’ll understand why that fact alone deserves respect.)

Sure, they’re quite different pieces of art, but art all the same.

In fact, these paintings, as you can learn from the video embedded in the virtual tour, have great spiritual and religious significance too.

How blessed are we as  South Africans to have such a rich heritage?

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One of those ideas so obvious, that we just did not think about it:

Use Twitter to share  360º images with the world.

Well, we’ve caught on to it at last and now you can follow us at Daily_360 (https://twitter.com/Daily_360).

If you’re not a Twitter user – you can view the latest ‘tweets’ on the right hand side of our Home Page.

We will post (at least) one virtual tour of a South African place of interest per day.

Please share with your friends – we want the whole world to see the beauty of our country and continent.

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If you’re a regular here at Virtual Africa, you would know that we have a soft spot for World Heritage Sites.

We’ve had the privilege to shoot all 8 South African World Heritage Sites on behalf of South Africa Tourism a few years ago, but when the good people of the African Heritage Epic approached us with their grand idea, we quickly learnt that the first round was just a warm up.

We couldn’t believe our luck:

Their passion was to capture 55 (yes, FIFTY FIVE!!!) African heritage sites in the best ways possible!!

As part of the African Heritage Epic they’re busy creating documentaries, aggregating literature, making video’s and writing books about anything and everything that has anything to do with these amazing African sites.
But not only are they doing the research, they’re planning to visit each of these sites and have started doing so already.
Now it might sound like a small thing, but I’ll give you consider that the Aldabra Atoll 1200km South West of the Seychelles main island, Mahe, is one of the sites and the Valley of the Kings in Egypt is another – you realize why they call it the EPIC.

Anyway, our part in this is to help capture the sites in glorious 360º and we’ve been doing just that for the past few months.

We are happy to announce that the first 6 sites have been completed.

We have created 25 full screen 360º images of each of the heritage sites, each image with an embedded video clip to tell you more about what you’re seeing. (That’s a whopping 150 scenes, for those who are reaching for the calculators.)

In the light of September being Heritage month and 24 September, South African Heritage Day, it’s the perfect time to start sharing the ‘fruits of our labour’ with the world.

And where better to begin, than the beginning: The Cradle of Humankind.

Very important for maximum coolness: click on the square in the top right corner of the virtual tour below, also, click on the icon next the the gentleman to hear what he has to say.

Remember to subscribe to Virtual Africa, by dropping you email address in the space allocated to the right.
This will allow you to get updates on the other 150 images we have to share…..

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We visited the Green Point Stadium in Cape Town a few weeks ago and compiled a 360º virtual tour with embedded video for your viewing pleasure.

Green Point Stadium will be the venue for one of  the semi-final games of the 2010 Soccer World Cup.

You can read more about the stadium at the Green Point Stadium visitors centre website.

What we’ll do here however, is give you some proper virtual tours and interactive content to explore.

First up: a 360º view from the raised platform in the middle of the stadium, with an integrated video describing what we did there.

Click here for the full screen version.

(By the way: the weather did not allow us to complete the Gigapan.)

Second: a Google Earth tour showing a model of the stadium in 3D.
You need to install the Google Earth plugin to view this, it’s highly recommended!

Simply click on the ‘play’ button to view the Google Earth fly-over.


This is not a video, it’s a fully interactive browser version of Google Earth, so feel free to explore the rest of Cape Town...
(If you’re on a slow connection, replay the tour a few times to allow the satellite imagery to load.)

Thirdly: A collection of 360º images linked with interactive hotspots, allowing you to explore the stadium.

The hotspots taking you to 8 different spots in the stadium are active in the Full Screen version

Lastly, some good old traditional video:

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We’re proud to release the first version of our new South African map.

It includes about 1000 scenic virtual tours – each with a link to a beautiful full screen version of itself.

Click on “Google Maps” in the menu bar to access the map and see if we have a pano of your town, or favourite South African spot.

Google Map of South Africa

It’s still a ‘beta’ (which means we’re not sure if it’s unbreakable)  so have a look and let us know what you think.

We’ll be adding some features in the weeks to come.

Any idea’s, suggestions or songs of praise will be accepted and appreciated.

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