2014/10/15 下午 10:05:08

iphone Programming Glossary: cm

Finding distance using accelerometer in iPhone

http://stackoverflow.com/questions/10930007/finding-distance-using-accelerometer-in-iphone

point in this process of finding distance displaced by an iPhone. The requirement of accuracy in current system is in cm and displacement can be in 3D. What I have already done is 1. Tried using sound to calculated distance between between 2.. Please provide me some pointer that suggest some way out of current situation. iphone ios filter accelerometer cmmotionmanager share improve this question You can't achieve cm accuracy. The reason is surprisingly the orientation error... current situation. iphone ios filter accelerometer cmmotionmanager share improve this question You can't achieve cm accuracy. The reason is surprisingly the orientation error. The above link contains some tips what you can do if you need..

Corebluetooth central manager callback didDiscoverPeripheral twice

http://stackoverflow.com/questions/11557500/corebluetooth-central-manager-callback-diddiscoverperipheral-twice

NSNumber numberWithBool NO forKey CBCentralManagerScanOptionAllowDuplicatesKey Scan for peripherals with given UUID cm scanForPeripheralsWithServices NSArray arrayWithObject HeliController.serviceUUID options scanOptions No problem there I.. advertisementData NSDictionary advertisementData RSSI NSNumber RSSI if discovered discovered YES NSLog @ Discovered cm stopScan scanButton setTitle @ Connect forState UIControlStateNormal else if discovered discovered YES NSLog @ Already discovered..

Scaling AR pictures based on the distance from the camera

http://stackoverflow.com/questions/11913355/scaling-ar-pictures-based-on-the-distance-from-the-camera

to make them look good on the AR view I think I should take some camera parameters into consideration. When a 10x10 cm object is just in front of the camera it may cover the whole screen. But when you put it a few metres farther it becomes..

Indoor navigation hardware/software requirements for iOS

http://stackoverflow.com/questions/15732181/indoor-navigation-hardware-software-requirements-for-ios

based on time of flight measurements. Requires expensive hardware for both transmitter and receiver. You can achieve cm accuracy with this but it's probably not what you're after This is still an field of research so it's not that easy to find..

How to set up gcov for code coverage analysis in iPhone SDK?

http://stackoverflow.com/questions/1945229/how-to-set-up-gcov-for-code-coverage-analysis-in-iphone-sdk

real trouble setting up code coverage analysis using gcov. I followed the instructions here http www.cubiclemuses.com cm articles 2009 05 14 coverstory on the iphone which are repeated very similarly in other places. I've tried using Google's..

iphone accelerometer speed and distance

http://stackoverflow.com/questions/3177199/iphone-accelerometer-speed-and-distance

iPhone SDK - get/calculate camera field of view (FOV) (Augmented Reality)

http://stackoverflow.com/questions/3643075/iphone-sdk-get-calculate-camera-field-of-view-fov-augmented-reality

measured. I then looked at the ratio of the size of the piece of paper to its image in the photo. My values were at 56 cm you can fully photograph i.e. so that it takes up exactly the screen size an object that is about 40cm x 60cm Using that.. were at 56 cm you can fully photograph i.e. so that it takes up exactly the screen size an object that is about 40cm x 60cm Using that i did some simple trig and arrived at Vertical FOV 2 atan 58.5 2 56.5 ~55 degrees Horizontal FOV 2 atan.. at 56 cm you can fully photograph i.e. so that it takes up exactly the screen size an object that is about 40cm x 60cm Using that i did some simple trig and arrived at Vertical FOV 2 atan 58.5 2 56.5 ~55 degrees Horizontal FOV 2 atan 21.5..

Getting displacement from accelerometer data with Core Motion

http://stackoverflow.com/questions/4449565/getting-displacement-from-accelerometer-data-with-core-motion

or slow motions lasting for more than 1 or 2 seconds. If you can live with some restrictions like small distances 10 cm and a given minimum velocity for your motions then I believe there might be the chance to find a solution no guarantee at..

Measuring time the vehicle takes to accelerate in iPhone

http://stackoverflow.com/questions/4654864/measuring-time-the-vehicle-takes-to-accelerate-in-iphone