What is the difference between lossy and lossless image compression?
This tests irreversible discard versus perfect reconstruction. A strong answer defines lossy as dropping detail, lossless as fully reversible, names JPEG, PNG, and chooses lossless for masters, lossy for web. Red flag: claiming lossless is always smaller.
This tests the fidelity versus size trade-off. A strong answer states that lossy permanently discards data to exploit visual limits, while lossless preserves every bit for perfect reconstruction. Name JPEG for lossy and PNG for lossless, then explain that lossless suits archival masters or repeated editing, whereas lossy wins when bandwidth is limited and minor degradation is acceptable. Red flag: confusing compression with resolution, or claiming lossless always yields smaller files.
Read the original → Wikipedia: Image compression
- #image compression
- #lossy vs lossless
- #computer vision
- #file formats
- #data fidelity
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