Re: how turn off camera after using CurrentImage?
- To: mathgroup at smc.vnet.net
- Subject: [mg123996] Re: how turn off camera after using CurrentImage?
- From: Szabolcs <szhorvat at gmail.com>
- Date: Wed, 4 Jan 2012 05:04:52 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <jdul5s$jnf$1@smc.vnet.net>
- Reply-to: comp.soft-sys.math.mathematica at googlegroups.com
On Tuesday, 3 January 2012 11:27:08 UTC+1, Murray Eisenberg wrote: > On an iMac under OS X 10.6.8 (Snow Leopard), in Mathematica 8.0.4, I > evaluated CurrentImage[]. That automatically turned on the built-in > "FaceTime HD" camera. > > Is there some programmatic way from within Mathematica to turn the > camera off? > > And if not -- OT: is there some simple way to do this in OS X? (Other > than open and then quit the FaceTime app.) > Try ImageCapture[]. It has a control panel with an off button. I think CurrentImage[] keeps the camera on because the camera needs time to adjust after it has been turned on. The very first image captured is sometimes very dark or black, but in a couple of seconds anfter that I'm getting good images. Also, initialization takes time, so if you capture in a loop, all the turning off/on would be too slow. I'm also wondering through if there are CameraOn[] and CameraOff[] functions.