An adaptive watermarking technique is introduced in this work. A regional perceptual classi er is employed to assign a noise sensitivity index to each region. The watermark is inserted in the original image according to this index by using block DCT. The detection of the watermark is designed to achieve a desired false alarm probability.

Introduction Disordered voice quality could be a symptom of multiple sclerosis (MS). The impact of MS on voice-related quality of life is still controversial. Objectives The aim of this study was to compare the results of voice self-assessment with the results of expert perceptual assessment in patients with MS. Methods The research included 38 patients with relapse-remitting MS (23 women and 1...

OBJECTIVE This study examined the effects of speed deception on performance, physiological and perceptual responses, and pacing during sprint-distance triathlon running. METHODS Eight competitive triathletes completed three simulated sprint-distance triathlons (0.75 km swim, 20 km bike, 5 km run) in a randomised order, with swimming and cycling sections replicating baseline triathlon performa...

Background. Affective responses (pleasure or displeasure feelings) to high-intensity interval exercise (HIIE) are dependent on the intensity of the work-interval phases, but current evidence is limited to the prescribed-based HIIE protocol (P-HIIE) in overweight and obese adults. The influence of the self-paced HIIE protocol (S-HIIE) on perceptual responses (affective, enjoyment, and perceived ...