LUMIA APP LABS: CREATE STUNNING IMAGING APPS FOR LUMIA PHONES

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CREATE STUNNING IMAGING APPS

Berthier Lemieux Technology Wizard

LUMIA APP LABS #4

TYPICAL CAMERA USE CASES.

WP7.5 WP8

IMAGE PICKER X X

AUGMENTED REALITY VIEWFINDER X X

PRO-CAMERA X

FILTERS X

IMAGE PICKER

KEY APIS:

Microsoft.Phone.Tasks.PhotoChooserTask Microsoft.Phone.Tasks.CameraCaptureTask

Example code: http://tinyurl.com/cqlezbn

IMAGE PICKER

private void CameraRoll_Click(object sender, RoutedEventArgs e) { PhotoChooserTask objPhotoChooser = new PhotoChooserTask(); objPhotoChooser.Completed += objPhotoChooser_Completed; objPhotoChooser.ShowCamera = true; objPhotoChooser.Show(); } void objPhotoChooser_Completed(object sender, PhotoResult e) { switch (e.TaskResult) { case TaskResult.OK: PickedImage.Source = new BitmapImage(new Uri(e.OriginalFileName)); break;

AR VIEWFINDER

Example code: http://tinyurl.com/c3sdyqa

KEY API:

Microsoft.Devices.PhotoCamera Microsoft.Devices.Sensors.Motion System.Windows.Media.VideoBrush

DISPLAY THE CAMERA FRAMES

cam = new Microsoft.Devices.PhotoCamera(); viewfinderBrush.SetSource(cam);

See also Petzold: http://tinyurl.com/cgydz3u

AR VIEWFINDER

motion = new Motion(); motion.TimeBetweenUpdates = TimeSpan.FromMilliseconds(20); motion.CurrentValueChanged += motion_CurrentValueChanged; motion.start(); ...

private void CurrentValueChanged(MotionReading reading) {

// Phone has moved, update the overlays on the screen according to // reading.Attitude.RotationMatrix

KEY API:

Windows.Phone.Media.Capture.PhotoCaptureDevice Windows.Phone.Media.Capture.CameraCaptureSequence

PRO-CAMERA

Example code: HTTP://TINYURL.COM/CO79VKM

Device Nokia Lumia 820 Nokia Lumia 920

Sensor Front Back Front Back Autofocus range Infinity Auto, Macro, Normal, Full,

Hyperfocal, Infinity Infinity Auto, Macro, Normal, Full,

Hyperfocal, Infinity

Preview resolution 640x480 800x448, 640x480 1280x720, 1024x768 1280x720, 1024x768

Capture resolution 640x480 3264x2448, 3552x2000, 2592x1936, 2592x1456, 2048x1536, 640x480

1280x960, 1280x720, 640x480

3264x2448, 3552x2000, 2592x1936, 2592x1456, 2048x1536, 640x480

Exposure compensation (EV)

-12...12 -12...12 -12...12 -12...12

Exposure time (microseconds)

1...33333 1...500000 1...33333 1...500000

Flash mode Off Auto, On, Off Off Auto, On, Off Focus illumination mode Off Auto, On, Off Off Auto, On, Off

ISO 100...800 100...800 100...800 100...800 Manual focus position No Yes, 1000 positions No Yes, 1000 positions

Scene mode Auto, Sport, Night, Backlit Auto, Macro, Sport, Night, Night Portrait, Backlit

Auto, Sport, Night, Backlit Auto, Macro, Sport, Night, Night Portrait, Backlit

White balance preset Cloudy, Daylight, Fluorescent, Tungsten

Cloudy, Daylight, Fluorescent, Tungsten

Windows.Foundation.Size resolution = new Windows.Foundation.Size(640, 480); camera = await PhotoCaptureDevice.OpenAsync(CameraSensorLocation.Back,resolution); viewfinderBrush.SetSource( camera );

Open PhotoCaptureDevice.OpenAsync()

Specify CameraCaptureFrame.DesiredProperties[]

Prepare PhotoCaptureDevice.PrepareCaptureSequenceAsync()

Capture CameraCaptureSequence.StartCaptureAsync()

Process CameraCaptureFrame.CaptureStream

Create PhotoCaptureDevice.CreateCaptureSequence()

CameraCaptureSequence sequence = camera.CreateCaptureSequence(1); sequence.FrameAcquired += sequence_FrameAcquired;

CameraCaptureFrame frame = sequence.Frames[0]; frame.DesiredProperties[KnownCameraPhotoProperties.FlashMode] = FlashState.On;

await camera.PrepareCaptureSequenceAsync(sequence); await sequence.StartCaptureAsync();

FILTERS

KEY TECHNOLOGIES:

DirectX ARM Neon intrinsic

EXAMPLE CODE: http://tinyurl.com/cqc79n4 http://tinyurl.com/cuvosez http://tinyurl.com/bsvoyl9

HOOKING INTO THE PLATFORM

WP8 LENSES

Documentation: http://tinyurl.com/cgcfafd

HOOKING INTO PHOTOS HUB SHARE PICKER RICH MEDIA APPS PHOTO EDIT PICKER

Documentation: http://tinyurl.com/cawyy23

Thank you!