پديد آورندگان :
شريعتي نژاد، منير دانشگاه صنعتي جندي شاپور دزفول - دانشكده مهندسي برق و كامپيوتر، دزفول، ايران , مولايي زاده، فاطمه دانشگاه صنعتي جندي شاپور دزفول - دانشكده مهندسي برق و كامپيوتر، دزفول، ايران , شكيبا، محسن دانشگاه صنعتي جندي شاپور دزفول - دانشكده مهندسي برق و كامپيوتر، دزفول، ايران
كليدواژه :
ديد باقيمانده , درك نور , نقص بينايي , هدست واقعيت مجازي , تلفن هوشمند
چكيده فارسي :
مقدمه: بسياري از افراد نابينا داراي سطحي از ديد باقيمانده هستند كه ارتقاي آن مي‌تواند در استقلال و كيفيت زندگي آنان تاثيرگذار باشد. در سال‌هاي اخير، به كارگيري ابزارهاي تقويت ديداري مورد توجه قرار گرفته است. اما تنوع پايين، دسترسي نسبتا دشوار و هزينه بالاي فن‌آوري‌هاي موجود در بازار اين محصولات، جايگزيني آنها با ابزارهاي مقرون به صرفه‌تر را اجتناب‌ناپذير مي‌نمايد. در اين راستا، در اين پژوهش، آزمايش‌هايي براي اثربخشي ارتقاي ديد باقيمانده با به كارگيري هدست واقعيت مجازي و تلفن هوشمند طراحي شد.
روش كار:براي انجام آزمايش‌ها، نرم‌افزار گرافيكي اختصاصي با بهره‌گيري از كتابخانه يونيتي (Unity) تحت سيستم عامل اندرويد توسعه داده شد. با توجه به اهميت تشخيص شيء و حركت در راه رفتن مستقل، آزمايش‌هاي تشخيص تعداد، نوع و حركت اشياء طراحي گرديد. نكته كليدي در طراحي آزمايش‌ها، استفاده از شكل‌هاي ساده و تصويرهاي سياه و سفيد بود.
يافته‌ها: نتايج نشان داد در آزمايش‌هاي تشخيص تعداد، نوع و حركت اشيا، به ترتيب 72 درصد، 78 درصد و 83 درصد از شركت‌كنندگان موفق به ارائه پاسخ كاملا صحيح شدند.
نتيجه‌گيري: اكثريت افراد شركت‌كننده در اين مطالعه، عليرغم ديد باقيمانده پايين داراي درك حداقلي از نور و حركت بودند و اين نشان مي‌دهد كه ساده‌سازي اشيا و نيز نمايش اشيا با رنگ سفيد در پس‌زمينه سياه، تاثير قابل توجهي بر افزايش توانمندي بصري و تقويت ديد افراد نابينا دارد. در پايان، با توجه به قابليت دسترسي و كم هزينه بودن هدست‌هاي واقعيت مجازي و تلفنهاي هوشمند، نتايج اين پژوهش چشم‌انداز روشني در توانبخشي افراد نابينا ترسيم مي‌نمايد.
چكيده لاتين :
Introduction: The ability to see for people who have visual impairment is not always completely deteriorated. Indeed, enhancing the remaining vision boosts the quality of their life meanwhile they become more independent. In recent years, the application of visual augmentation tools has been considered by many researchers working on methods to increase the visual acuity status. However, the available smart glasses are low in diversity and are relatively difficult to access due to their high price. The objective of many scientific projects is to replace expensive smart glasses with more cost-effective tools. In this regard, we have designed experiments to evaluate virtual reality headsets and smartphones’ effectiveness to enhance remaining vision.
Methods: In this case, a virtual reality headset is used as glasses, and a smartphone functions as the display, as well as the processor. Proprietary graphics software is developed by applying Unity libraries under the Android operating system to design the experiments. Three experiments were designed regarding the importance of the object and motion detection in partially sighted people’s independent mobility. The mentioned experiments recognized the number of objects, including five cylindrical columns, distinguishing the type of objects, including a circle and a square, and sensing the motion of objects, including a moving square. The key point in designing the experiments is that simple shapes and black and white images are used. Individuals’ responses are recorded quantitatively 1, 0.5, and 0, representing totally correct, semi-correct, and totally wrong responses, respectively. In addition, a questionnaire is designed based on light and motion perception, as well as Daily Living Tasks Dependent on Vision (DLTV). The questionnaire is not only used to evaluate the quality of the remaining vision but also to identify the problems and needs concerning visually impaired people. There were four women and five men varied in age ranging from 34 to 79 participating in the study voluntarily. All the interviews were conducted face to face and unstructured. The participants were convenience samples of the Blind Society of Dezful city located in Khuzestan province. It is worth mentioning that all participants willingly consented to take part in experiments and interviews. Moreover, the names of the participants are not disclosed in public.
Results: The results revealed that 72%, 78%, and 83% of the participants successfully recognized the number, type, and motion of objects, respectively. In general, participants discovered light and motion in 89% of all experiments. The interview findings revealed the extent of the visually impaired people’s ability to carry out daily living tasks and identify their primary and fundamental problems.
Conclusion: Despite the low remaining vision, the majority of individuals participating in this study had a minimal perception of light and motion. Findings showed that simplifying objects and displaying white objects in a black background significantly impacted increasing visual capabilities and enhancing the vision of visually impaired people. Finally, due to the availability and low cost of virtual reality headsets and smartphones, this study’s findings draw a clear perspective on the rehabilitation of partially sighted people.
