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PsyPad.xcworkspace/xcuserdata/david.xcuserdatad/UserInterfaceState.xcuserstate
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,26 @@ | ||
| // | ||
| // Created by david on 27/02/13. | ||
| // | ||
| // To change the template use AppCode | Preferences | File Templates. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
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| @class AVCaptureSession; | ||
| @class AVCaptureVideoPreviewLayer; | ||
| @class AVCaptureStillImageOutput; | ||
| @class AVCaptureConnection; | ||
| @class TestViewController; | ||
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| @interface DistanceDetector : NSObject | ||
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| @property (strong, nonatomic) AVCaptureSession *session; | ||
| @property (strong, nonatomic) AVCaptureVideoPreviewLayer *captureVideoPreviewLayer; | ||
| @property (strong, nonatomic) AVCaptureStillImageOutput *stillImageOutput; | ||
| @property (strong, nonatomic) AVCaptureConnection *videoConnection; | ||
| @property (strong, nonatomic) UIImage *photo; | ||
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| - (void)takePhoto:(TestViewController *)delegate question:(int)question; | ||
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| - (void)done; | ||
| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,209 @@ | ||
| // | ||
| // Created by david on 27/02/13. | ||
| // | ||
| // To change the template use AppCode | Preferences | File Templates. | ||
| // | ||
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| #import <CoreMedia/CoreMedia.h> | ||
| #import <AVFoundation/AVFoundation.h> | ||
| #import "DistanceDetector.h" | ||
| #import "TestViewController.h" | ||
| #import "AppDelegate.h" | ||
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| @implementation DistanceDetector | ||
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| - (id)init | ||
| { | ||
| if (self = [super init]) | ||
| { | ||
| self.session = [[AVCaptureSession alloc] init]; | ||
| self.session.sessionPreset = AVCaptureSessionPresetHigh; | ||
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| UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation]; | ||
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| AVCaptureVideoOrientation orientation = AVCaptureVideoOrientationLandscapeLeft; | ||
| if (interfaceOrientation == UIInterfaceOrientationLandscapeLeft) | ||
| orientation = AVCaptureVideoOrientationLandscapeLeft; | ||
| else if (interfaceOrientation == UIInterfaceOrientationLandscapeRight) | ||
| orientation = AVCaptureVideoOrientationLandscapeRight; | ||
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| // Get all cameras in the application and find the frontal camera. | ||
| AVCaptureDevice *frontalCamera; | ||
| NSArray *allCameras = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo]; | ||
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| // Find the frontal camera. | ||
| for ( int i = 0; i < allCameras.count; i++ ) | ||
| { | ||
| AVCaptureDevice *camera = [allCameras objectAtIndex:(NSUInteger)i]; | ||
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| if ( camera.position == AVCaptureDevicePositionFront ) | ||
| { | ||
| frontalCamera = camera; | ||
| } | ||
| } | ||
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| [frontalCamera lockForConfiguration:nil]; | ||
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| if ([frontalCamera isFocusModeSupported:AVCaptureFocusModeContinuousAutoFocus]) | ||
| { | ||
| [frontalCamera setFocusMode:AVCaptureFocusModeContinuousAutoFocus]; | ||
| } | ||
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| if ([frontalCamera isExposureModeSupported:AVCaptureExposureModeContinuousAutoExposure]) | ||
| { | ||
| [frontalCamera setExposureMode:AVCaptureExposureModeContinuousAutoExposure]; | ||
| } | ||
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| if ([frontalCamera isWhiteBalanceModeSupported:AVCaptureWhiteBalanceModeContinuousAutoWhiteBalance]) | ||
| { | ||
| [frontalCamera setWhiteBalanceMode:AVCaptureWhiteBalanceModeContinuousAutoWhiteBalance]; | ||
| } | ||
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| [frontalCamera unlockForConfiguration]; | ||
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| NSError *error = nil; | ||
| AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:frontalCamera error:&error]; | ||
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| if (input) | ||
| { | ||
| [self.session addInput:input]; | ||
| [self.session startRunning]; | ||
|
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| // output | ||
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| self.stillImageOutput = [[AVCaptureStillImageOutput alloc] init]; | ||
| [self.session addOutput:self.stillImageOutput]; | ||
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| self.videoConnection = nil; | ||
| for (AVCaptureConnection *connection in self.stillImageOutput.connections) | ||
| { | ||
| for (AVCaptureInputPort *port in [connection inputPorts]) | ||
| { | ||
| if ([[port mediaType] isEqual:AVMediaTypeVideo] ) | ||
| { | ||
| self.videoConnection = connection; | ||
| break; | ||
| } | ||
| } | ||
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| if (self.videoConnection) { break; } | ||
| } | ||
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| [self.videoConnection setVideoOrientation:orientation]; | ||
| [self.videoConnection setVideoMirrored:YES]; | ||
| } | ||
| } | ||
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| return self; | ||
| } | ||
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| - (void)takePhoto:(TestViewController *)delegate question:(int)question | ||
| { | ||
| [self.stillImageOutput captureStillImageAsynchronouslyFromConnection:self.videoConnection completionHandler:^(CMSampleBufferRef imageDataSampleBuffer, NSError *error) | ||
| { | ||
| NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageDataSampleBuffer]; | ||
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| //[imageData writeToURL:[self createNewFile] atomically:YES]; | ||
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| UIImage *image = [[UIImage alloc] initWithData:imageData]; | ||
| self.photo = image; | ||
| NSString *result = [self performDistanceDetection]; | ||
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| //UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil); | ||
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| if (result) | ||
| { | ||
| [delegate distanceDetectionPerformed:[NSString stringWithFormat:@"Question %d: %@", question, result]]; | ||
| } | ||
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| //[self.session removeOutput:stillImageOutput]; | ||
| }]; | ||
| } | ||
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| /*- (NSURL *)createNewFile | ||
| { | ||
| NSURL *documentsDirectory = [[APP_DELEGATE applicationDocumentsDirectory] URLByAppendingPathComponent:@"Images"]; | ||
| NSString *templateString = [NSString stringWithFormat:@"%@/XXXXXX", [documentsDirectory path]]; | ||
| char template[templateString.length + 1]; | ||
| strcpy(template, [templateString cStringUsingEncoding:NSASCIIStringEncoding]); | ||
| char *filename = mktemp(template); | ||
| NSString *path = [NSString stringWithCString:filename encoding:NSASCIIStringEncoding]; | ||
| NSURL *newURL = [NSURL fileURLWithPath:[path stringByAppendingString:@".jpg"]]; | ||
| [[NSFileManager defaultManager] createFileAtPath:newURL.path contents:nil attributes:nil]; | ||
| return newURL; | ||
| }*/ | ||
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| - (void)done | ||
| { | ||
| [self.session removeOutput:self.stillImageOutput]; | ||
| } | ||
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| - (NSString *)performDistanceDetection | ||
| { | ||
| UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation]; | ||
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| #warning accuracy low | ||
| NSDictionary *options = [NSDictionary dictionaryWithObject:CIDetectorAccuracyLow forKey:CIDetectorAccuracy]; | ||
| CIDetector *detector = [CIDetector detectorOfType:CIDetectorTypeFace context:nil options:options]; | ||
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| CIImage *image = [CIImage imageWithCGImage:self.photo.CGImage]; | ||
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| int exifOrientation; | ||
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| enum { | ||
| PHOTOS_EXIF_0ROW_TOP_0COL_LEFT = 1, // 1 = 0th row is at the top, and 0th column is on the left (THE DEFAULT). | ||
| PHOTOS_EXIF_0ROW_TOP_0COL_RIGHT = 2, // 2 = 0th row is at the top, and 0th column is on the right. | ||
| PHOTOS_EXIF_0ROW_BOTTOM_0COL_RIGHT = 3, // 3 = 0th row is at the bottom, and 0th column is on the right. | ||
| PHOTOS_EXIF_0ROW_BOTTOM_0COL_LEFT = 4, // 4 = 0th row is at the bottom, and 0th column is on the left. | ||
| PHOTOS_EXIF_0ROW_LEFT_0COL_TOP = 5, // 5 = 0th row is on the left, and 0th column is the top. | ||
| PHOTOS_EXIF_0ROW_RIGHT_0COL_TOP = 6, // 6 = 0th row is on the right, and 0th column is the top. | ||
| PHOTOS_EXIF_0ROW_RIGHT_0COL_BOTTOM = 7, // 7 = 0th row is on the right, and 0th column is the bottom. | ||
| PHOTOS_EXIF_0ROW_LEFT_0COL_BOTTOM = 8 // 8 = 0th row is on the left, and 0th column is the bottom. | ||
| }; | ||
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| switch (interfaceOrientation) { | ||
| case UIInterfaceOrientationLandscapeRight: // Device oriented horizontally, home button on the right | ||
| exifOrientation = PHOTOS_EXIF_0ROW_BOTTOM_0COL_RIGHT; | ||
| break; | ||
| case UIInterfaceOrientationLandscapeLeft: // Device oriented horizontally, home button on the left | ||
| default: | ||
| exifOrientation = PHOTOS_EXIF_0ROW_TOP_0COL_LEFT; | ||
| break; | ||
| } | ||
|
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| NSDictionary *imageOptions = [NSDictionary dictionaryWithObject:[NSNumber numberWithInt:exifOrientation] forKey:CIDetectorImageOrientation]; | ||
|
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| NSArray *features = [detector featuresInImage:image options:imageOptions]; | ||
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| for (CIFaceFeature *feature in features) | ||
| { | ||
| CGPoint leftEyePosition, rightEyePosition, mouthPosition; | ||
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| if (feature.hasLeftEyePosition && feature.hasRightEyePosition && feature.hasMouthPosition) | ||
| { | ||
| leftEyePosition = feature.leftEyePosition; | ||
| rightEyePosition = feature.rightEyePosition; | ||
| mouthPosition = feature.mouthPosition; | ||
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| //CGFloat xDist = (rightEyePosition.x - leftEyePosition.x); | ||
| //CGFloat yDist = (rightEyePosition.y - leftEyePosition.y); | ||
| //CGFloat distance = (CGFloat)sqrt((xDist * xDist) + (yDist * yDist)); | ||
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| //CGFloat calibration_pixel = 142; | ||
| //CGFloat calibration_distance = 30; | ||
|
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| //return [NSString stringWithFormat:@"Detected distance from camera: %.5fpixels = %.5fcm", distance, (calibration_pixel*calibration_distance)/distance]; | ||
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| return [NSString stringWithFormat:@"Detected facial features: left eye %.5f/%.5f, right eye: %.5f/%.5f, mouth: %.5f/%.5f", leftEyePosition.x, leftEyePosition.y, rightEyePosition.x, rightEyePosition.y, mouthPosition.x, mouthPosition.y]; | ||
| } | ||
| } | ||
|
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| return nil; | ||
| } | ||
|
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| @end |
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