First Midterm

Question 1

“Describe the smallest unit of an image displayed on a screen.”

Answer 1

“The smallest unit of an image displayed on a screen is a Pixel.”

Question 2

“Identify a file format that supports transparency.”

Answer 2

“PNG is a file format that supports transparency.”

Question 3

“Define a primary characteristic of vector graphics.”

Answer 3

“Vector graphics are made of paths defined by mathematical equations and if you resize them they don’t lose their quality “

Question 4

“Where is the RGB color model used in computer graphics?”

Answer 4

“The RGB color model is commonly used for digital displays in computer graphics.”

Question 5

“Explain the purpose of anti-aliasing in computer graphics.”

Answer 5

“Anti-aliasing aims to reduce jagged edges on curved lines in computer graphics.”

Question 6

“True or False: Vector graphics can be resized without losing quality.”

Answer 6

“True.”

Question 7

“True or False: A higher resolution results in a lower level of detail in an image.”

Answer 7

“False.”

Question 8

“True or False: The Z-buffer is used to determine the depth of objects in 3D space during rendering.”

Answer 8

“True.”

Question 9

“What is the difference between a raster image and a vector image?”

Answer 9

“Raster images are made of pixels and can lose quality when resized, while vector images are made of paths defined by mathematical equations and are resolution-independent.”

Question 10

“Explain the significance of frame rate in animation.”

Answer 10

“Frame rate refers to the number of frames displayed per second (FPS) in an animation. A higher frame rate results in smoother motion, while a lower frame rate may cause choppy or stuttered motion.”

Question 11

“Define a shader in the context of computer graphics.”

Answer 11

“A shader is a program used to calculate the effects of light, texture, and color on a 3D object or surface during the rendering process.”

Question 12

“Explain the function of shaders in rendering.”

Answer 12

“Shaders are responsible for determining how a surface interacts with light and its final appearance during the rendering process.”

Question 13

“Describe how anti-aliasing improves visual quality in graphics.”

Answer 13

“Anti-aliasing works by blending the colors of the pixels at the edges of lines or curves, making transitions smoother and more natural-looking, which enhances the visual quality of graphics, especially in games, animations, and digital art.”

Question 14

“Define lossy image compression and provide an example.”

Answer 14

“Lossy image compression reduces file size by discarding some image data, leading to a loss in quality. An example of lossy compression format is JPEG.”

Question 15

“Define lossless image compression and provide an example.”

Answer 15

“Lossless image compression retains all image data, ensuring no loss of quality. An example of lossless compression formats are PNG and GIF.”

Question 16

“Explain the significance of aspect ratio in digital images and videos.”

Answer 16

“The aspect ratio is the ratio of the width to the height of an image or video. It is important because it ensures that images or videos maintain proper proportions when displayed on different screens or devices, preventing stretching or distortion.”

Question 17

“Define the components of the RGB color model.”

Answer 17

“The RGB color model consists of three primary components: Red (the red color channel), Green (the green color channel), and Blue (the blue color channel).”

Question 18

“What formats can be used to compress images for web use?”

Answer 18

“JPEG and WebP are commonly used formats for compressing images for smaller file sizes.”

Question 19

“What is the benefit of using PNG format for certain images?”

Answer 19

“The PNG format is beneficial for images with transparency, allowing for better integration with various backgrounds.

The image won’t become blurry or distorted, making PNGs ideal for sharp logos and graphs containing lots of figures.”

Question 20

“How can quality settings affect image optimization?”

Answer 20

“Adjusting quality settings helps to balance between file size and visual quality, ensuring that images are optimized without significant loss of appearance.”