Collocation is known as one of the most problematic areas in learning a second language and it seems that if one has tendency to improve his or her communication ability in another language, the elaboration of collocation using competence is among the most important issues. This study investigated the role of implicit input enhancement in teaching grammatical collocations for Iranian EFL learne...

-Contrast enhancement is an important factor in the gray scale images. One of the widely accepted contrast enhancement method is the Histogram equalization (HE). HE achieves comparatively better performance on almost all types of image but sometimes produces excessive visual deterioration. The proposed Contrast Enhancement using Brightness Preserving Histogram Plateau Limit (CEBPHPL) method pro...

Image enhancement is aimed to improve image quality by maximizing the information content in the input image. In this article a PSO based hue preserving color image enhancement technique is proposed. The process is as follows. Image enhancement is considered as an optimization problem and particle swarm optimization (PSO) is used to solve it. The quality of the intensity image is improved by a ...

Covert spatial attention increases the perceived contrast of stimuli at attended locations, presumably via enhancement of visual neural responses. However, the relation between perceived contrast and the underlying neural responses has not been characterized. In this study, we systematically varied stimulus contrast, using a two-alternative, forced-choice comparison task to probe the effect of ...

The principle of image enhancement is to improve the interpretability of information contained in the image for human perception or to provide a more suitable input for automated image processing systems. Many images like medical images, satellite images, aerial images and natural images suffer from contrast and noise issues. It is necessary to enhance the contrast and remove the noise to incre...