Understanding Image Representation in Computer Systems

This video tutorial explains how images are stored in computer systems using binary. It covers two main methods: bitmap and vector. Bitmap images are made of pixels, each with a binary value, while vector images store mathematical instructions to draw shapes. The video focuses on bitmap images, explaining how they are stored, the role of metadata, and the impact of color depth on image quality. It also discusses the use of 24-bit color, which allows for over 16 million colors, and the use of hexadecimal for easier representation. The tutorial concludes with a recap of the key concepts.

What are the two main ways images can be stored in a computer system?

• Bitmap and Vector

• JPEG and PNG

• GIF and TIFF

• Raster and SVG

In a bitmap image, what is each colored square called?

• Matrix

• Texel

• Voxel

• Pixel

What is the purpose of metadata in bitmap images?

• To enhance the image resolution

• To compress the image data

• To define the image's width, height, and color depth

• To store the image's color palette

How many colors can be represented with a 2-bit color depth?

• 2 colors

• 4 colors

• 8 colors

• 16 colors

What happens to the file size as the color depth and resolution of an image increase?

• The file size becomes unpredictable

• The file size increases

• The file size remains the same

• The file size decreases

How many colors can a 24-bit color depth represent?

• 1024 colors

• Over 16 million colors

• 256 colors

• 64 thousand colors

Why is hexadecimal representation used for 24-bit colors?

• It is more accurate

• It is easier for computers to process

• It allows for more colors

• It is more compact for humans to read

What is the main difference between bitmap and vector images?

• Bitmap images are larger in file size

• Bitmap images store color data for each pixel

• Vector images are better for photographs

• Vector images are made of pixels

What is the term for the number of bits used to represent each pixel's color?

• Resolution

• Bit rate

• Color depth

• Pixel density

Which type of image is best suited for technical drawings and clip art?

• Raster

• Photographic

• Bitmap

• Vector