Function assert_quality 

pub fn assert_quality(
    reference: &ImgVec<RGB8>,
    encoded: &ImgVec<RGB8>,
    min_ssimulacra2: Option<f64>,
    max_dssim: Option<f64>,
) -> Result<()>

Assert that quality meets specified thresholds.

This is designed for use in CI tests and benchmarks. It calculates quality metrics and fails if they don’t meet the specified thresholds.

Arguments

• reference - Reference image (original)
• encoded - Encoded/decoded image to compare
• min_ssimulacra2 - Minimum acceptable SSIMULACRA2 score (optional)
• max_dssim - Maximum acceptable DSSIM value (optional)

Returns

Ok(()) if quality meets all specified thresholds.

Errors

Returns an error if:

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

Example

use codec_eval::eval::helpers::assert_quality;

// Assert SSIMULACRA2 >= 80.0 and DSSIM <= 0.002
assert_quality(&reference, &encoded, Some(80.0), Some(0.002))?;

// Assert only SSIMULACRA2 >= 90.0
assert_quality(&reference, &encoded, Some(90.0), None)?;

// Assert only DSSIM <= 0.001
assert_quality(&reference, &encoded, None, Some(0.001))?;