Traverse directory pictures , Realization :
1. Identify the color of the picture ,
2. The blue border marks the square area (10*10),
3. Mark the number of small squares where the paint falls off ( Small square 10% Fall off , It is believed that the small square in this area falls off completely ) The number of square areas ( It's usually 100) Proportion to the actual shedding area ( The scratch area needs to be deducted ).
4. Use words to mark the proportion of falling area on the picture .
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Be careful : The shedding of the sample image is not obvious , Photos can be modified manually , To achieve the test effect .