Digital Image Fundamentals

What is a pixel in digital imaging?

• The smallest unit of a digital image

• A unit of measurement for screen size

• A type of camera lens

• A type of digital filter

Explain the concept of image compression.

• Image compression is the process of adding extra data to an image file to enhance its visual quality.

• Image compression is the process of increasing the size of an image file to improve its visual quality.

• Image compression is the process of converting an image file into a different format without changing its size.

• Image compression is the process of reducing the size of an image file without significantly affecting its visual quality.

List the steps involved in digital image processing.

• Image acquisition, Preprocessing, Segmentation, Representation and description, Recognition and interpretation, Image analysis

• Color correction, Cropping, Adding filters

• Uploading, Tagging, Organizing

• Image editing, Printing, Sharing

What are the elements of visual perception in digital images?

• Sound, taste, smell, and temperature

• Size, brightness, time, and orientation

• Color, contrast, texture, shape, and spatial relationships

• Weight, speed, pressure, and volume

Describe the process of image sensing and acquisition.

• Using a scanner to convert a physical image into a digital format

• Drawing an image on a computer using a graphics software

• Taking a photo with a traditional film camera

• Capturing an image using a sensor, converting the optical signal into an electronic signal, and storing the digital image data.

How is a pixel related to the resolution of an image?

• Resolution is determined by the file format of the image, not the number of pixels

• A pixel is the smallest unit of a digital image, and the resolution of an image is determined by the number of pixels it contains.

• The resolution of an image is determined by the physical size of the image, not the number of pixels

• A pixel is a measurement of color depth in an image, not related to resolution

What are the different types of image compression techniques?

• Black and white compression

• Lossy compression and lossless compression

• High and low compression

• Color and monochrome compression

How does human visual perception affect digital image processing?

• Digital image processing algorithms are not influenced by human visual perception

• Human visual perception has no impact on digital image processing

• Human visual perception is irrelevant in the context of digital image processing

• Human visual perception affects the design of digital image processing algorithms.

Explain the role of sensors in image acquisition.

• Sensors capture sound and convert it into digital signals.

• Sensors capture temperature and convert it into digital signals.

• Sensors capture motion and convert it into digital signals.

• Sensors capture light and convert it into digital signals.

What are the advantages of digital image processing over traditional methods?

• More expensive and time-consuming

• Limited storage and transmission capabilities

• Less accurate and reliable results

• Advantages of digital image processing over traditional methods include easier manipulation, storage, transmission, and the use of advanced algorithms for image enhancement and analysis.