Fixing #1390

[BlazeFace]

fixes #1390

• I have read the Contribution Guidelines
• I have commented on the issue above and discussed the intended changes
• A maintainer has signed off on the changes and the issue was assigned to me
• All newly added code is adequately covered by tests
• All existing tests are still running without errors
• The documentation was modified to reflect the changes OR no documentation changes are required.

Changes

Updated the ratio calculation to round up if the remainder is within 0.9999 I have tested this with a good amount of examples and it still works, but I have not written any proof that this will remain correct at any value. We could use a much smaller target to round say .99 as well.

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[BlazeFace]

@patriksvensson The only major modification I was considering was a bounds check to see if the total height could go over the target, do you think that is needed?