Data compression

Students will learn how the information in a pixel can be manipulated to change the image, and apply a bitmask filter to an image to remove some information and reduce the memory size of the file. Finally, students will modify the filter to find a balance between quality and small file size. Based on the original lessons developed by the Exploring Computational Thinking team at Google.

Additional details

Year band(s)	7-8, 9-10
Content type	Lesson ideas
Format	Web page
Core and overarching concepts	Data representation, Computational thinking, Abstraction, Specification (decomposing problems), Algorithms
Australian Curriculum Digital Technologies code(s)	AC9TDI8K04 Explain how and why digital systems represent integers in binary AC9TDI10K03 Investigate simple data compression techniques
Keywords	data representation, abstraction, pattern recognition, data analysis, algorithm design, data, data compression, pixels, pattern, patterns, Google, Google for Education, Education, computational thinking, GoogleCT
Organisation	ESA
Copyright	Creative Commons Attribution 4.0, unless otherwise indicated.