According to the World Health Organization 2014 Report, 39 million people are blind all over the world that there are not any treatment for 20% of them [1]. Loss of vision causes a lot of problems in daily tasks, especially mobility. In recent decades, various types of portable or wearable systems have been introduced to help blind people. These systems improve their abilities either by restoring vision through stimulating proper part of the visual system (i.e. retina, optic nerve, or the visual cortex) [2] or by using other senses (i.e. sense of touch or hearing) [3]. Most of these systems require a module to capture the video and extract needed information with image processing (in some of these systems the information prepared by other ways like sonar [4-6], infrared [7], etc.).
Depth is one of the important cues that people with the normal vision benefit it in mobility, navigation, picking up things, etc. Some of the visual prosthesis (e.g. audible visual prosthesis [5-6], tactile visual prosthesis [7-11], and implantable visual prosthesis [11-13]) benefit this cue to enhance the abilities of blind people in some daily tasks. In many of these prostheses, depth cue created as a large size image that needs to down-sample for giving proper size to stimulation. In this …show more content…
A retinal implant is a kind of implantable visual prosthesis that yields a visual sensation by electrical stimulation of retinal bipolar and ganglion cells [2]. The next generation of The ICAS retinal prosthesis has a 6*12 electrode array for stimulation, and thus the final image after image processing should be a 6*12 image. Therefore, our proposed method for downsampling is compatible with this generation and reduce the image size to 6*12 for stimulation. However, this method can be used for other types of visual prosthesis that need to downsample a depth image to any
Depth is one of the important cues that people with the normal vision benefit it in mobility, navigation, picking up things, etc. Some of the visual prosthesis (e.g. audible visual prosthesis [5-6], tactile visual prosthesis [7-11], and implantable visual prosthesis [11-13]) benefit this cue to enhance the abilities of blind people in some daily tasks. In many of these prostheses, depth cue created as a large size image that needs to down-sample for giving proper size to stimulation. In this …show more content…
A retinal implant is a kind of implantable visual prosthesis that yields a visual sensation by electrical stimulation of retinal bipolar and ganglion cells [2]. The next generation of The ICAS retinal prosthesis has a 6*12 electrode array for stimulation, and thus the final image after image processing should be a 6*12 image. Therefore, our proposed method for downsampling is compatible with this generation and reduce the image size to 6*12 for stimulation. However, this method can be used for other types of visual prosthesis that need to downsample a depth image to any