Which of the following is a classification performance measurement indicator? (Multiple choice)

• A.recall
• B.False rate
• C.precision
• D.Accuracy

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What are the difficulties in natural semantic processing? (Multiple choice)

• A.Single word recognition
• B.Pragmatic ambiguity
• C.Participle
• D.Named Entity Recognition

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What are the following advantages of LBP feature descriptor? (Multiple choice)

• A.Good at extracting color features
• B.Rotational invariance
• C.Good texture feature extraction
• D.Grayscale invariance

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Take a photo indoors on a cloudy day with poor lighting. Calculate the brightness histogram of the photo. What shape might it be?

• A.The right side is relatively flat, and the left side has a peak. (The image is relatively low in brightness)
• B.The waveform is uniform and has no peaks
• C.The left side is relatively flat, and the right side has a peak. (The image is brighter)
• D.There is a peak on each side

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The acquisition process of digital images is similar to that of the human eye, using a large number of photosensitive sensors to form an array to acquire images. The quality of the image is determined by the number of sensor units, () and sensing performance.

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