2results about How to "Guaranteed naturalness" patented technology

The application discloses an active defense method, device and equipment for diffusion speech conversion and a medium, and relates to the technical field of speech security. The active defense method comprises the following steps: obtaining source speech and reference speech, introducing a constrained protection disturbance into the reference speech, constructing protected speech, and ensuring that the protection disturbance satisfies a disturbance imperceptibility constraint. The source speech and the protected speech are input into a speech conversion model with the reference speech as a speaker condition, content information analysis, speaker condition constraint acoustic generation and waveform synthesis are completed by the speech conversion model, and a protection generated speech is output. A joint loss function is constructed based on speaker embedding representations of the protection generated speech and the reference speech, gradients of a current disturbance position and a predicted midpoint position are calculated according to the joint loss function and are fused to obtain an update direction, the protection disturbance is iteratively optimized, and projection or clipping is performed to satisfy the disturbance imperceptibility constraint. Finally, the protected speech is output.

The application belongs to the technical field of image processing. The application provides a feature-driven region perception multi-scale low-light image enhancement method. The disclosed embodiment can dynamically and accurately locate the feature distribution of a low-light image, and implement region-adaptive differential enhancement, thereby significantly enhancing and protecting the detail features while strongly suppressing the noise in flat regions, so as to solve the core technical problem that it is difficult to balance between detail recovery and noise suppression.