Function assert_perception_level 

pub fn assert_perception_level(
    reference: &ImgVec<RGB8>,
    encoded: &ImgVec<RGB8>,
    min_level: PerceptionLevel,
) -> Result<()>

Assert that quality is at the specified perception level or better.

This is a more semantic way to assert quality thresholds based on perceptual categories rather than raw metric values.

Arguments

• reference - Reference image (original)
• encoded - Encoded/decoded image to compare
• min_level - Minimum acceptable perception level

Returns

Ok(()) if quality is at the specified level or better.

Errors

Returns an error if:

• Images have different dimensions
• Quality is below the specified perception level
• Metric calculation fails

Example

use codec_eval::eval::helpers::assert_perception_level;
use codec_eval::metrics::PerceptionLevel;

// Assert quality is at least "Subtle" (DSSIM < 0.0015)
assert_perception_level(&reference, &encoded, PerceptionLevel::Subtle)?;

// Assert quality is "Imperceptible" (DSSIM < 0.0003)
assert_perception_level(&reference, &encoded, PerceptionLevel::Imperceptible)?;