7 ms·
Visualizing The Matterhorn as an 860,000 point cloud
- flurinegger 13y agoDoesn't work in Chrome/Chrome Canary/Safari on OS X. Just get a black screen after the points are loaded
- dpedu 13y agoWorks on Chrome on 10.8 here. But not Safari.
- flurinegger 13y agoI'm still on 10.7, Chrome 32.0.1664.3 dev
- deweller 13y agoDid not work on Chrome 30/Mac OS X 10.8.5 for me.
- dubya 13y agoI got just the black screen on my office iMac with an AMD card, but it works fine on my much older Macbook with an nvidia card.
- TrainedMonkey 13y agoTook a reload to get it chugging on my firefox. Win7 64.
- psuter 13y agoThe company behind the technology to turn images into point clouds is Pix4D [1]. Their website has another few pretty demos. [1] pix4D.com
- bane 13y agoit's just as fun to flip it around and explore the big hole in the ground
- heliotron 13y agoThis crashes Safari on my mac. Seems to be a segfault originating somewhere in the graphics card driver. Card is an ATI HD 4870. Running MacOS X 10.8.5/Safari 6.0.5.
- heliotron 13y agoAlso crashes in Firefox 24 on the same machine.
- mark212 13y agoworked for me in Safari on my Retina MacBook Pro. Running OS X 10.8.5 and Safari 6.0.5
- heliotron 13y agoYes, I think it must be a problem with the graphics card or driver rather than the browser itself.
- teekert 13y agoAlso Crashes Ff on my mbp early 2011 with 10.7.5
- pagekicker 13y agoWhat's the point of point clouds?
- mark212 13y agomy question also. This is useful for what, exactly?
- tinco 13y agoPoint clouds are not very useful themselves, if we had a choice we would skip them. They are the result of turning any measured data (like pictures or depth samples or whatever) into a 3d visualisation. Ideally you have collected enough data to reconstruct the surface geometry with reasonable accuracy, but realistically often you don't. Our minds are rather good at inferring surface geometry from point clouds, our algorithms not so much yet as far as I know. So sometimes (as in the case of this visualisation) it suffices to show people just the point cloud.
- gavinpc 13y agoBecause it's there.
- dagw 13y agoPoint cloud data is (relatively) cheap and easy to collect. However turning point clouds into 3D surfaces is computationally Very Hard and even the very best tools still require a lot human intervention to give acceptable results. Having good tools that are able to work with point clouds directly dramatically speeds up the time from data collection to data visualization and being able to actually use the data.
- StavrosK 13y agoHmm, why is it very hard? Wouldn't just connecting the points between them yield acceptable results? I can understand if the points are disparate, but this dataset is pretty much a grid, and it looks like you could easily generate the surface from the points. What am I missing?
- mbq 13y agoIt is actually a raw data from UAV mapping; the whole story: https://www.mapbox.com/blog/sensefly-drone-mapping-matterhorn/ https://www.mapbox.com/blog/sensefly-drone-mapping-matterhor...
- Sprint 13y agoI don't think so, the raw data should be much more accurate down to deci-, if no centimeters.
- tekmate 13y agoi don't have a reference to compare it to aside from a heightmap i used for some rendering years ago, but 25mb for the *.asc seems pretty big for the quality it puts out
- computer 13y agoI applaud the makers of this demo for adding a gif-based fallback on the error page for those of us who have no WebGL support. It shows: "Your browser does not support this demo. Here is what you are missing:" [https://www.mapbox.com/pointcloud/matterhorn/css/error.gif https://www.mapbox.com/pointcloud/matterhorn/css/error.gif]
- okueng 13y agoThis is a low res version of the original data, because of limitations of webgl. If you want to see the making of, as well as the full res pointcloud (over 300 millions!!!), check out this video: Mapping the impossible: http://youtu.be/jh4kRatBNkk http://youtu.be/jh4kRatBNkk
- okueng 13y agoWrong link, the video mapping the impossible is this one: http://youtu.be/NuZUSe87miY http://youtu.be/NuZUSe87miY
- StavrosK 13y agoCan we get Leap Motion support in this? Their API is pretty simple/well made, and it's very well suited to easily rotating 3D stuff.