-science/aqa/questions","basePath":"/gcse/computer-science/aqa/representing-images/questions","formulaUrl":null,"initialIndex":36,"initialQuestionWindow":[{"id":"d8c736f8-cbd5-44a9-b6ce-0ee8032d6a1a","revisionId":"75704ff0-21b2-4fd3-a658-5cd2081e3e18","questionNumber":null,"questionType":"LA","specification":"Figure 3 shows the binary data representation of a 6x6 pixel graphic, **Image X**.\n\nImage X consists of a **Yellow** outer border, a **Cyan** inner ring, and a **Magenta** 2x2 square in the center.\n\nFigure 3\n\n| | | | | | |\n| :-: | :-: | :-: | :-: | :-: | :-: |\n| 11 | 11 | 11 | 11 | 11 | 11 |\n| 11 | 01 | 01 | 01 | 01 | 11 |\n| 11 | 01 | 10 | 10 | 01 | 11 |\n| 11 | 01 | 10 | 10 | 01 | 11 |\n| 11 | 01 | 01 | 01 | 01 | 11 |\n| 11 | 11 | 11 | 11 | 11 | 11 |","difficulty":2,"difficultyBand":"easy","totalMarks":3,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"3e8bb64d-6506-4c67-b87e-dfed0da2d047","label":null,"content":"Complete the table below to show the binary representation of each colour in **Image X**.\n\n| Colour | Binary representation |\n| :--- | :--- |\n| Yellow | |\n| Cyan | |\n| Magenta | |","markscheme":"- Identifies that the outermost border pixels have the value $11$, so Yellow $= 11$ B1\n- Identifies that the inner ring pixels have the value $01$, so Cyan $= 01$ B1\n- Identifies that the central $2\\times 2$ square pixels have the value $10$, so Magenta $= 10$ B1","marks":3,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"dd761812-098a-444a-9244-61159d427ec1","revisionId":"bd8dd4fe-f90d-449c-9124-5db3738c3735","questionNumber":null,"questionType":"LA","specification":"A high-altitude meteorological drone captures digital bitmap images of cloud formations to analyze precipitation patterns.","difficulty":2,"difficultyBand":"easy","totalMarks":1,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"07125168-0c46-4653-a526-dcc7ef26099b","label":null,"content":"State what is meant by the term *colour depth* in the context of these digital images.","markscheme":"- The number of bits used to represent or store the colour of a single pixel (or the value $n$ that determines the maximum number of unique colours, $2^n$, available in the image). B1","marks":1,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"e1f86613-e584-49eb-82cd-0400a73e05e0","revisionId":"025c2368-d770-4205-8a81-3d1b1f425ffb","questionNumber":null,"questionType":"LA","specification":"","difficulty":4,"difficultyBand":"easy","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"76e0653f-b58b-4ee6-b67d-61b4e310166c","label":null,"content":"A retro game developer designs a pixel-art item sprite for an indie game. The sprite (Sprite P) is represented as a bitmap image. The image is shown below:\n\n![A grid-based pixel art layout of Sprite P measuring 16 pixels wide by 12 pixels high.](https://assets.mathsgenie.co.uk/aqa-qb/154e8ddd-aab5-4c55-bb0e-8a9765221019.png)\n\nThe designer uses exactly 8 distinct colors to paint the sprite.\n\nCalculate the minimum amount of storage required to store the image data for Sprite P.\n\nGive your answer in **bytes**.\n\nShow your working.","markscheme":"- Shows a correct calculation of the total number of pixels ($16 \\times 12 = 192$) or shows the total bits required ($192 \\times 3 = 576$ bits) M1\n- State the correct final answer of $72$ (bytes) A1","marks":2,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null}],"subjectCode":"gcse_computer_science__aqa","summaries":[{"id":"0bd2fef1-a351-454d-a85b-4337cccce1cc","difficultyBand":"easy","calculatorUse":null},{"id":"0cee8044-bdb7-4299-87ef-e59dfe24e568","difficultyBand":"medium","calculatorUse":null},{"id":"0d6ec132-28d7-40de-b64e-8cd02251b781","difficultyBand":"easy","calculatorUse":null},{"id":"0dcc247

Representing images

Question 23

Representing images Questions

Representing images

Question 23

Representing images Questions