Binary Representation of Images (2 marks)
Describe how a single pixel is represented in binary within a bitmap image.
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Images
Binary and Graphics (4 marks)
A bitmap image has a width of 5 pixels and a height of 4 pixels, with a colour depth of 3 bits per pixel. Calculate the total number of bits required to represent this image.
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Effect of Resolution and Colour Depth (4 marks)
A bitmap image is made up of pixels. Describe how changing the number of pixels and colour depth can affect the file size and quality of a bitmap image.
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Pixels (2 marks)
Explain what a pixel is and how it relates to the way an image is displayed on a screen.
Bitmap File Size Calculation (3 marks)
A bitmap image has a width of 800 pixels and a height of 600 pixels. If the colour depth is 24 bits, calculate the file size in bytes.
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Colour Depth (3 marks)
Describe what is meant by the term ‘colour depth’ in digital images and how increasing the colour depth affects the image quality and file size.
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Image Resolution (3 marks)
Define image resolution and explain how increasing the resolution affects both the quality of an image and its file size.
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Effects of Changing Resolution and Colour Depth (4 marks)
A digital image with a resolution of 800×600 pixels has its resolution doubled and its colour depth increased from 8 bits to 16 bits per pixel. Discuss the impact these changes will have on the quality and file size of the image.
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Metadata in Images (2 marks)
What is metadata in the context of digital images, and give two examples of information it might contain.
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Understanding Binary Representation of Images (2 marks)
Explain how an image is represented using pixels and binary code.
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