Feature Enhancement in Visually Impaired Images

Enhancement of text for the visually impaired.

Previous research has established the benefits of image enhancement by spatial filtering for face perception and motion video appreciation among elderly low-vision observers [Invest. Ophthalmol. Vis. Sci. 32, 2337 (1991); J. Opt. Soc. Am. A 11, 1929 (1994)]. It has also been reported that similar enhancement could increase reading speeds by a factor of 2-4 in the same population [cf. Ophthalmol...

Image enhancement for the visually impaired

Image enhancement for the visually impaired. Simulations and experimental results.

Digital image enhancement has been proposed as an aid for the visually impaired. The capability of two enhancement techniques to improve recognition of images by patients with central scotoma or cataracts was evaluated using image-processing simulations and direct patient testing. Enhancements and simulations were based on measurements of contrast sensitivity loss for patients with macular dise...

MPEG-based image enhancement for the visually impaired

Avni Vora Eli Peli, MEMBER SPIE Harvard Medical School The Schepens Eye Research Institute 20 Staniford Street Boston, Massachusetts 02114-2500 E-mail: [email protected] Abstract. An MPEG-based image contrast enhancement algorithm for people with low vision is presented. Contrast enhancement is achieved by modifying the interand intra-quantization matrices in the MPEG decoder during th...

Appearance Enhancement for Visually Impaired with Projector Camera Feedback

Visually impaired is a common problem for human life in the world wide. The projector-based AR technique has ability to change appearance of real object, and it can help to improve visibility for visually impaired. We propose a new framework for the appearance enhancement with the projector camera system that employed model predictive controller. This framework enables arbitrary image processin...