Image processing

1. Image processing is a method to perform operations on an image in order to get an enhanced image or to extract some useful information from it. It involves various techniques including image enhancement, segmentation, noise reduction, feature extraction, pattern recognition, and more. Image processing is used in a wide range of applications such as medical imaging, satellite imaging, facial recognition, self-driving cars, and digital photography. It plays a crucial role in enhancing the quality of images, analyzing visual data, and facilitating decision-making in various fields.

What is spatial domain processing in image processing?

A) Converting an image to a different color space.
B) Operations are performed directly on the pixels of an image.
C) Applying filters to an image.
D) Analyzing the frequency components of an image.

2. What is image segmentation?

A) Detecting and recognizing objects in an image.
B) Creating a 3D representation of an image.
C) Adjusting the contrast of an image.
D) Dividing an image into multiple segments to simplify its representation.

3. What is edge detection in image processing?

A) Identifying the boundaries of objects in an image.
B) Morphing one image into another.
C) Colorizing a black and white image.
D) Blurring the details in an image.

4. What is image compression?

A) Converting a color image to grayscale.
B) Enlarging an image without losing quality.
C) Adding noise to an image.
D) Reducing the size of an image file while preserving its visual quality.

5. What does the term 'bit depth' refer to in image processing?

A) The physical size of an image in pixels.
B) The aspect ratio of an image.
C) The number of bits used to represent each pixel in an image.
D) The number of colors in an image.

6. What is histogram equalization used for in image processing?

A) Converting an image to black and white.
B) Resizing an image.
C) Adding noise to an image.
D) Improving the contrast of an image by spreading out pixel values.

7. Which image file format supports lossless compression?

A) PNG
B) BMP
C) JPEG
D) GIF

8. What is the purpose of dilating an image in morphological operations?

A) Expanding the boundaries of objects in an image.
B) Reducing the size of objects in an image.
C) Changing the colors of an image.
D) Adding noise to an image.

9. What is color space conversion in image processing?

A) Adjusting the brightness of an image.
B) Converting an image from one color representation to another.
C) Resizing an image.
D) Adding noise to an image.

10. What is the purpose of morphological operations in image processing?

A) Manipulating the structure of objects in an image.
B) Smoothing out the texture of an image.
C) Enhancing the brightness of an image.
D) Applying artistic filters to an image.

11. Which image processing technique is used for recognizing and extracting text from images?

A) Optical Character Recognition (OCR)
B) Pixel averaging
C) Lens distortion correction
D) Histogram analysis

12. What is a convolutional neural network (CNN) commonly used for in image processing?

A) Creating image collages.
B) Adding motion blur to images.
C) Image classification and object detection.
D) Converting color images to black and white.

13. Which technique is commonly used to remove noise from images?

A) Median filtering
B) Thresholding
C) Dithering
D) Saturation adjustment

14. Which algorithm is commonly used for image segmentation?

A) Principal component analysis
B) K-means clustering
C) Gradient descent
D) Linear regression

15. What is template matching in image processing?

A) Generating random images.
B) Finding a subimage within a larger image.
C) Creating a collage from multiple images.
D) Detecting edges in an image.

16. In image processing, what is the Fourier transform used for?

A) Detecting edges in an image.
B) Rotating an image.
C) Creating animations from still images.
D) Converting an image from spatial domain to frequency domain.

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