Pontus Carlsson

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Traditional MDCT-based perceptual audio coding schemes employ mid/side and intensity stereo techniques to allow efficient joint coding of the two channels of a stereophonic signal. These techniques, however, provide only little coding gain for critical stereo signals characterized by spectral components with a distinct level or phase difference between the(More)
A new strategy to select the Lagrangian multiplier for nonreference frames is proposed, with the objective to maximize the average PSNR. The selection is based on the observation that nonreference frames should be optimized using a Lagrangian multiplier equivalent to the negative slope of the global R-D curve. This curve is not known a priori and a simple(More)
A central problem in diagnostic radiology is to compare a new x-ray picture with a previous picture and from this comparison be able to decide whether anatomical changes have occurred in the patient or not. It is of primary interest that these pictures are identical in projection. If not it is difficult to decide with confidence whether differences between(More)
There are many situations where manual intervention in automated systems, such as flexible manufacturing systems, is inevitable. Commonly the control of a manufacturing system is implemented in terms of operations, and sequences thereof, and these operations can typically be run manually. However, running the operations in arbitrary order may lead to(More)
Attractive individuals are evaluated and treated more positively than unattractive individuals (Eagly, Ashmore, Makhijani, & Longo, 1991; Feingold, 1992; Langlois et al., 2000). In the present research, we try to find ways to reduce attractiveness bias in hiring decisions. Experiment 1 examined the influence of warning participants about bias. Warnings were(More)
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