CGA Grader · Analysis Lab

Compare a student grade with its reference.

Choose two aligned Rec.709 gamma 2.4 stills. The analyzer calculates deterministic pixel, luminance, perceptual, histogram, vectorscope, and spatial evidence.

Private durable Preview

01 · Target

Reference image

Drop a JPEG or PNG hereor click to browse · maximum 15 MB

No image selected

02 · Student

Student submission

Drop a JPEG or PNG hereor click to browse · maximum 15 MB

No image selected

Images must have identical dimensions and no alpha channel. Each file uploads directly to private R2 and may be up to 15 MB.