fail to get 2d landmark in float dtype

I test "fa.get_landmarks_from_image" on some images in 256 * 256 and 512 * 512 resolution. While the result is numpy with dtype float32, but the decimal place of result is always 0, in other words, the dtype of result is int in fact.

Is that a bug? Or how can I solve the problem?

Look at the `fa.get_landmarks_from_image` function in the face-alignment library, likely in the main module or API file. Examine how landmarks are processed and returned, focusing on dtype conversion steps. Check if there's a test suite for landmark accuracy to verify the fix. The goal is to ensure returned float32 arrays contain non-zero decimal values.

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