Compression and Storage

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1. Which explanation matches lossless versus lossy image storage?A. Block-based compression can quantize transformed regions separately and reveal boundaries at stronger compression.B. Choose compression by testing the downstream task, not file size alone.C. Version the source image, processing settings, calibration, and output together.D. Lossless compression reproduces stored pixel values exactly; lossy compression permits differences to save space.

2. Which explanation matches why block compression can show artifacts?A. Lossless compression reproduces stored pixel values exactly; lossy compression permits differences to save space.B. Choose compression by testing the downstream task, not file size alone.C. Block-based compression can quantize transformed regions separately and reveal boundaries at stronger compression.D. Version the source image, processing settings, calibration, and output together.

3. Which explanation matches choose quality for the downstream task?A. Lossless compression reproduces stored pixel values exactly; lossy compression permits differences to save space.B. Choose compression by testing the downstream task, not file size alone.C. Block-based compression can quantize transformed regions separately and reveal boundaries at stronger compression.D. Version the source image, processing settings, calibration, and output together.

4. For why block compression can show artifacts, which result or action fits this practical case: A saved photograph shows square blocks around a smooth region.A. Compare a high-quality and low-quality JPEG crop at the same display scale.B. Decode both versions and compare exact pixel arrays, not only filenames.C. Compare detection recall on original and compressed validation images.D. Recreate one published result from a raw file and recorded parameters.

5. For preserve originals and processing history, which result or action fits this practical case: A team overwrites its originals after changing contrast.A. Decode both versions and compare exact pixel arrays, not only filenames.B. Compare a high-quality and low-quality JPEG crop at the same display scale.C. Compare detection recall on original and compressed validation images.D. Recreate one published result from a raw file and recorded parameters.

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Compression and Storage

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