Computer Vision and Image Recognition - Test
Computer Vision and Image Recognition
  • 1. Computer vision is an interdisciplinary field that enables computers to interpret and understand the visual world from digital images or videos. It involves the development of algorithms and techniques to extract meaningful information from visual data, mimicking the human visual system's capabilities. Image recognition, a subset of computer vision, focuses on identifying and categorizing objects, scenes, or patterns in images or videos. Through the use of deep learning, neural networks, and machine learning, computer vision and image recognition have applications in various domains, including healthcare, autonomous vehicles, surveillance, augmented reality, and more.

    What is Computer Vision?
A) The field of study that enables computers to interpret and understand visual information from the real world.
B) The use of computer screens to display images.
C) The study of how human vision works.
D) The process of filtering and enhancing visual images.
  • 2. What is the purpose of pre-processing images in Computer Vision?
A) Randomly distorting images.
B) Enhancing image quality and reducing noise for better analysis.
C) Blurring images for artistic effect.
D) Changing the image dimensions.
  • 3. What is meant by the term 'Image Segmentation'?
A) Combining multiple images into one.
B) Creating a mirror image of the original.
C) Removing colors from an image.
D) Dividing an image into meaningful regions or objects for analysis.
  • 4. Which evaluation metric is commonly used for image classification tasks?
A) R-squared
B) Mean Squared Error
C) Accuracy
D) F1 Score
  • 5. Which technique can be used to reduce overfitting in deep learning models for image recognition?
A) Using smaller batch sizes
B) Increasing the learning rate
C) Adding more layers to the network
D) Dropout regularization
  • 6. What is meant by 'transfer learning' in the context of deep learning for image recognition?
A) Using pre-trained models and fine-tuning for a specific task.
B) Transferring image pixels to a new image.
C) Transferring images between different devices.
D) Transferring gradients during backpropagation.
  • 7. What is the purpose of a 'pooling layer' in a convolutional neural network?
A) Reducing the spatial dimensions of the input.
B) Normalizing input values.
C) Introducing non-linearity to the network.
D) Increasing the number of parameters.
  • 8. Which activation function is commonly used in convolutional neural networks?
A) Tanh
B) ReLU (Rectified Linear Unit)
C) Linear
D) Sigmoid
  • 9. What is a 'confusion matrix' used for in evaluating image classification models?
A) Creating composite images.
B) Converting images to grayscale.
C) Summarizing the performance of a classification model using true positive, false positive, true negative, and false negative values.
D) Blurring images for privacy protection.
  • 10. What does the term 'SIFT' stand for in the context of image recognition?
A) Selective Image Filtering Technique
B) Segmentation of Image Features and Textures
C) Semi-Integrated Face Tracking
D) Scale-Invariant Feature Transform
  • 11. Which is an example of a popular dataset commonly used for image recognition tasks?
A) Spam dataset
B) ImageNet
C) Song lyrics dataset
D) Weather dataset
  • 12. What does CNN stand for?
A) Computerized Neuron Network
B) Complex Neuron Network
C) Controlled Neural Network
D) Convolutional Neural Network
  • 13. Which activation function is commonly used in the output layer of a CNN for multi-class classification?
A) Softmax
B) ReLU
C) Tanh
D) Sigmoid
  • 14. Which technique is used to identify and locate objects within an image?
A) Feature extraction
B) Image classification
C) Object detection
D) Image segmentation
  • 15. Which layer in a CNN is responsible for reducing spatial dimensions?
A) Activation layer
B) Fully connected layer
C) Convolutional layer
D) Pooling layer
  • 16. Which loss function is commonly used in image classification tasks?
A) Mean Squared Error
B) L1 Loss
C) Cross-Entropy Loss
D) Binary Cross-Entropy Loss
  • 17. What is 'instance segmentation' in the context of object detection?
A) Applying color filters to images.
B) Smoothing pixel intensities.
C) Converting images to black and white.
D) Identifying and delineating individual objects within a scene.
  • 18. Which technique is used for image denoising in Computer Vision?
A) Adding noise to images
B) Increasing image resolution
C) Non-local means denoising
D) Rotating images
  • 19. Which technique is commonly used for image feature extraction?
A) K-Nearest Neighbors (KNN)
B) Convolutional Neural Networks (CNNs)
C) Support Vector Machines (SVM)
D) Principal Component Analysis (PCA)
  • 20. What is the purpose of homography in Computer Vision?
A) Normalizing image histograms.
B) Mapping one image onto another image plane.
C) Blurring image boundaries.
D) Detecting object edges.
  • 21. Which pre-trained CNN model is commonly used for various image recognition tasks?
A) InceptionNet
B) AlexNet
C) ResNet (Residual Network)
D) VGGNet
  • 22. Which technique can be used for fine-tuning a pre-trained CNN model for a new task?
A) Noise Injection
B) Transfer Learning
C) Image Cropping
D) PCA Dimensionality Reduction
  • 23. Which method can be used for computing optical flow in video processing?
A) Fourier transform
B) Histogram equalization
C) Lucas-Kanade method
D) Gaussian blur
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