ObsFree provides a service that assists blind individuals in reporting issues with Braille blocks. By simplifying the reporting procedure, it helps the handling agency to operate more smoothly. In addition, it provides a service that shows the status of complaint acceptance and sends notifications if there may be damaged Braille blocks nearby when approaching the area. Even if a complaint is filed, it takes some time to repair it due to physical limitations. Therefore, it can reduce accidents caused by damaged or vandalized Braille blocks by notifying them for a certain period of time.
- AndroidX Core 1.9.0
- AndroidX AppCompat 1.6.1
- CameraX 1.3.1
- GMS play-services-location 21.1.0
- Firebase Android BoM 32.7.1
- Tensorflow Lite 2.14.0
- Report damaged braille blocks
- Camera guiding with tensorflow lite in TTS
- Upload photo and location to firebase
- Show damaged braille blocks
- Show location in markers
- Change fix status
- Alert for nearby damaged braille blocks
- Background alert using WorkManager
- Alert in TTS
- Colab T4 GPU
- Tensorflow lite
- Roboflow
- optimizer: SGD
- hyperparameters: lr0=0.01, lrf=0.01, momentum=0.937, weight_decay=0.0005, warmup_epochs=3.0, warmup_momentum=0.8, warmup_bias_lr=0.1, box=0.05, cls=0.5, cls_pw=1.0, obj=1.0, obj_pw=1.0, iou_t=0.2, anchor_t=4.0, fl_gamma=0.0, hsv_h=0.015, hsv_s=0.7, hsv_v=0.4, degrees=0.0, translate=0.1, scale=0.5, shear=0.0, perspective=0.0, flipud=0.0, fliplr=0.5, mosaic=1.0, mixup=0.0, copy_paste=0.0
- Input image size: 640x640
- Output
- image size: 600x399
- classes: 1 (White Cane)
- A person with white cane
- total: 600
- train: 500
- valid: 95
- test: 5
| Name | HyeJeong Park | DoHyun Lim | YoungHyeon Park | KiJin Kim |
|---|---|---|---|---|
| Role | Backend & Design | AI | Backend | Frontend |
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