Test Your Programming Skills with Safcode!

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Here is all important interview / exams questions.
Student doing practice apptitude test on safcode platform.
Instruction: "Total Number of Questions: 20
Each question carry 10 mark , no negative marking"

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Quiz Start

1. Which module of OpenCV includes 3D reconstruction and calibration? callin3D
viz
imgproc
core

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2. Which two GPIO pins have fixed pull up resistors? GPIO15 & GPIO18
GPIO25 & GPIO5
GPIO20 & GPIO19
GPIO2 & GPIO3

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3. Which step is based on the premise more images in the training set, the better it is? Data filtering
Collecting image samples
Creating test data
Data comparison

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4. Which command to user to know the current directory you are working on? ls
curdir
pwd
wd

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5. Which acts as MISO MOSI pair of Serial Peripherals interface 1? 15, 16
19, 20
4, 5
5, 8

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6. LPF in images filtering process is used for _______? Blurring image
Filtering the image
Edge detection
Sharping the image

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7. What is the name of the trained output file? Trained.xml
Trained.doc
Trained.yml
Trained.jpg

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8. What is not the part of unsupervised learning? Parametric
Non-Parametric
Dimensional Reduction
Clustering

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9. The histogram is extracted from _______ values? Binary
Octal
Numerical
Decimal

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10. What function is used to detect a face from an image that the user loads as an input? cropped_face
detectMultiScale
face_extracter()
minNeighbors

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