5

I think you're putting a bit too much emphasis on the word "cold". Although it could have some connotation of emotional coldness here, I wouldn't say the overall sense of the expression emphasizes that the person has a cold heart. I don't think you'd ever hear "cold balls", as in your title. The word "steel" is an essential element of the expression in the ...


1

Depending on exactly what you mean by "digging them out" I would have thought that either "extracting" if the image data is useful or "removing/deleting" if the data is discarded would be appropriate. I would say "extracting/deleting pedestrians' images out of the background" though, to clarify the exact goal of the exercise.


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