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In this paper we extend the cheap talk model of Crawford and Sobel (1982) to a multidimensional state space and policy space. We provide a characterization of equilibria. We focus on the question of feasibility of information transmission, for large degrees of conflict of interests between the sender and the receiver. We show that it is possible to construct equilibria with information transmis...

In this paper, we will define generalized real and generalized root signals of two dimensional median filtering. A new edge detection method based on generalized root signals of two dimensional median filtering will be proposed. Simulation results will be given and compared with the Sobel and Laplace edge detectors.

In this work we present an adaptive method for detection of Brazilian license plate. This method enhances adaptively an input image, improving low contrast areas and guaranteeing a good contrast in the plate region. Based on the fact that license plate’s area is rich in texture and vertical edge information, we can identify it after filtering the image with Sobel and Canny operators eliminating...

Here we discuss the application of an edge detection filter, the Sobel filter of GIMP, to the recently discovered motion of some sand dunes on Mars. The filter allows a good comparison of an image HiRISE of 2007 and an image of 1999 recorded by the Mars Global Surveyor of the dunes in the Nili Patera caldera, measuring therefore the motion of the dunes on a longer period of time than that previ...

Signalling refers to any activity by a party whose purpose is to in‡uence the perception and thereby the actions of other parties. This presupposes that one market participant holds private information that for some reason cannot be veri…ably disclosed, and which a¤ects the other participants’ incentives. Excellent surveys include Kreps and Sobel (1994) and Riley (2001). The classic example of ...

[1] A single-column model run under the weak temperature gradient approximation, a parameterization of large-scale dynamics appropriate for the tropical atmosphere, is shown to have multiple stable equilibria. Under conditions permitting persistent deep convection, the model has a statistically steady state in which such convection occurs, as well as an extremely dry state in which convection d...

Lindquist and Sobel claim that the graphical causal models they call "agnostic" do not imply any counterfactual conditionals. They doubt that "causal effects" can be discovered using graphical causal models typical of SEMs, DCMs, Bayes nets, Granger causal models, etc. Each of these claims is false or exaggerated. They recommend instead that investigators adopt the "potential outcomes" framewor...

Vision-based research in driver support and traffic monitoring systems aiming for collision avoidance and for free traffic jams has attracted a lot of attention lately. In this paper, we propose a robust new extraction method of wheel region for estimating the vehicle position on a road taking the distortion in a circular fisheye image into consideration. In order to make the process more effec...

several edge recognition strategies have now been planned within the past decades. Many are derived from differential strategies such as for example Sobel, Roberts, Laplacian operators, and therefore on. Nevertheless these calculations are quite sensitive to sound, in order to restrain sound before sensing edges. In this report intensive literature review has been presented in numerous edge rec...