This paper presents novel approaches for efficient feature extraction using environmental sound magnitude spectrogram. We propose approach based on the visual domain. This approach included three methods. The first method is based on extraction for each spectrogram a single log-Gabor filter followed by mutual information procedure. In the second method, the spectrogram is passed by the same ste...

Ensuring robustness against geometrical manipulations is a challenging task for watermarking algorithms. Watermarking algorithms that depend on the inherent geometry of the image for synchronization fail ungracefully due to de-synchronization through geometric manipulations. A class of algorithms tries to overcome this problem using feature-based synchronization markers. These are essentially c...

The performance of fingerprint recognition is heavily depending on the reliable extraction of singularities. Common algorithms are based on a Poincáre-Index estimation which is a numerical method. These algorithms ignore the topology of the underlying data and are only robust when certain heuristics and rules are applied. In this paper we present a model based approach for the detection of sing...

A novel strategy is proposed to address block artifacts in a conventional dark channel prior (DCP). The DCP was used estimate the transmission map based on patch-based processing, which also results image blurring. To enhance degraded image, single-image dehazing technique restores blurred with refined hidden Markov random field. Therefore, algorithm estimates that can reduce and improve clarit...

Budding is a good method of propagation in the Persian walnut (Juglans regia L.)., However, success of budding is low due to higher root pressure as well as the presence of phenolic compounds in the xylem sap. This study was conducted to compare various budding methods and cut below budding union on two and three-year-old Persian walnut under field conditions. The experiment was conducted based...

To monitor the interaction of cell surface acetylcholine (AcCho) receptors with the cytoskeleton, cultured muscle cells were labeled with radioactive or fluorescent a-bungarotoxin and extracted with Triton X-100, using conditions that preserve internal structure. A significant population of the AcCho receptors is retained on the skeletal framework remaining after detergent extraction . The prop...

Infrared point-target detection is one of the key technologies in infrared guidance systems. Due to long observation distance, point target often submerged background clutter and large noise process atmospheric transmission scattering, signal-to-noise ratio low. On other hand, image appears form fuzzy points, so that has no obvious features texture information. Therefore, scholars have proposed...