Cesium can load imagery like this fine, the problem is that your server is not configured to support CORS and therefore you need a proxy (or if you are in control of the server, you can enable CORS). I recommend you check out the imagery tutorial for details: http://cesiumjs.org/2013/01/04/Cesium-Imagery-Layers-Tutorial/
Cesium can load imagery like this fine, the problem is that your server is not configured to support CORS and therefore you need a proxy (or if you are in control of the server, you can enable CORS). I recommend you check out the imagery tutorial for details: http://cesiumjs.org/2013/01/04/Cesium-Imagery-Layers-Tutorial/