See the image below for examples of good and bad image areas to select for building device noise profiles. Here, image areas suitable for building noise profiles are highlighted in green; those that should not be used are highlighted in red. Note that an image area suitable for building a device noise profile should be at least 60x60 pixel large (preferably more than 100x100 pixels).
Additional comments regarding selection of image areas are shown below.
These image areas can be used to build device noise profiles, as they contain no visible details in all frequency ranges:
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– GOOD, because this area contains no important details |
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– GOOD, no important details (this area is from another image) |
The following image areas should not be used to build device noise profiles, because they contain visible details:
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– BAD, because this area contains a detail: corner – junction of wall and ceiling |
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– UNACCEPTABLE, because this area contains many details |
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– BAD, because this area contains some details: clouds (this area is from another image) |
See more examples of building device noise profiles on the Neat Image web page.