نتایج جستجو برای: image brightness
تعداد نتایج: 389586 فیلتر نتایج به سال:
There are presently several ongoing clinical trials to provide usable sight to profoundly visually impaired patients by means of electrical stimulation of the retina. Some of the blind patients implanted with retinal prosthesis reported un-patterned perception and yet benefit from the device in many activities of daily living, seemingly because they adopt active scanning strategies. The aim of ...
One of the important techniques in digital image processing is to enhance images. Contrast enhancement is a method that is used to enhance images for viewing process or for further analysis of images. Main idea behind contrast enhancement techniques is to increase contrast and to preserve original brightness of images. In this paper a contrast enhancement technique is proposed that first segmen...
The preferences of children and adults were compared with respect to each of the following color image quality attributes: image brightness, saturation, sharpness, color balance (+M/+G), hue rotation, and contrast. It was found that the children had no strong preferences for sharpness or contrast. There was no statistical evidence that they disagreed with adults as to the optimal level of brigh...
2. A sampled (but not quantized) image, whose brightness before quantization, in each spatial position, can take values in the range [0mV;250mV], has the linear histogram of its brightness represented (approximately) in Fig. 2.a). After the quantization, the histogram of the resulting digital image is the one in Fig. 2.b). Then, most likely, the quantizer that was used is: a) an 8 bit uniform q...
A psychophysical experiment was carried out to examine the relationship between image contrast and overall perceived brightness. A second phase of the experiment looked at the relationship between the perceived brightness of variegated backgrounds and the simultaneous contrast effect produced by such backgrounds. These results have important ramifications for procedures used to calculate adapti...
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