imperceptibility

n.

没法感知，看不见，细微；

Effective Pseudonoise Sequence and Decoding Function for Imperceptibility and Robustness Enhancement in Time-Spread Echo-Based Audio...
Imperceptibility and robustness analysis of DWT-based digital image watermarking
Steganography-based secret and reliable communications: Improving steganographic capacity and imperceptibility
On the Robustness and Imperceptibility of Digital Fingerprints
Trade-Off between Imperceptibility and Robustness of LSB Watermarking Using SSIM Quality Metrics
Audio watermarking in DCT domain: Algorithm and measurement of imperceptibility
HVS-based Imperceptibility Measure of Watermark in Watermarked Color Image
Beauty of the Invisible: Winckelmann and the Aesthetics of Imperceptibility
A DWT- based evaluation method of imperceptibility of watermark in watermarked color image
A politics of imperceptibility: A response to 'Antiracism, multiculturalism and the ethics of identification'