Assignment $2$: Image Brightness Adjustment for Photo Editing

Software

Objective: Adjust the brightness of an $8-$bit grayscale pixel value using binary

operations to increase or decrease brightness.

Instructions:

$6.$ Input Representation: Start with an $8-$bit binary input for a pixel$$s

brightness level. Use $01010000(80$ in decimal$).$

$7.$ Brightness Increase:

$$ Draw a block diagram to show the original brightness value being

increased by a factor of $2$ using a binary operation.

$$ If the result exceeds the $8-$bit limit$,$ cap the output at $11111111.$

$8.$ Additional Brightness Boost:

$$ Add a constant brightness boost of $10($binary $00001010)$ to the

increased brightness value. Draw a block to represent this addition.

$9.$ Brightness Decrease:

$$ Draw a block diagram that reduces the brightness by a factor of $2$

using a binary operation.

$$ Subtract a small constant $($binary $00000101)$ to decrease

brightness further and draw a block to represent this subtraction.

Deliverables:

$$ Block diagrams for each brightness adjustment step, with labels for each

operation and binary values.

Use the example:

Shifter Example: Approximate Celsius to Fahrenheit Converter

$-$ Convert $8-$bit Celsius input to $8-$bit Fahrenheit output

$-$ F $=$ C$*\backslash (9/5+32\backslash )$

$-$ Approximate: F $=$ C$*2+32$

$-$ Use left shift: F $=$ left$\_$shift$($C$)\backslash (+\backslash$underline$\{32\}\backslash )$