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EXIF Mining
張懷倫 / 許正佑 / 曲華榮 / 龔建瑞
EXIF
專門為數位相機的照片設定的,可以記錄數位照片的屬性信息和拍攝數據。
照片分群分析
變數名稱 變數敘述
UploadTime 照片上傳時間
DateTake 照片拍攝時間
Camera 相機型號
Size 照片檔案大小
Aperture 光圈
ExposureTime 快門
FocalLength 焦距
ISOSpeedRatings ISO值
MeteringMode 測光模式
TotalHits 累積總人氣
Uploaded_diff 照片拍攝與上傳間隔時間
資料:
9614張不設分類照片
變數:
採用7個訓練變數做分群
採用11個敘述變數做觀察
分群分析結果
累計總人氣最多為第二群照片:
1.照片上傳日為最近期
2.照片檔案大小最大
3.75%為Apple iPhone/ iPad; 2%為 HTC;
2%為Canon
累計總人氣最少為第四群照片:
1.照片上傳日為最早期
2.照片檔案大小最小
3.照片拍攝與上傳間隔時間最短(平均22天)
4.98%為Apple iPhone/ iPad
Question: 大家照完照片後…
• 拍完照後,過多久會把照片上傳?
• 使用的相機型號是否有差別?
• 應用方向
– 幫助Pixnet更了解使用者的習慣
Photo
拍攝時間
上傳時間
相機型號
Data
Formula
Prototype
Conclusion
• 拍照完後上傳速度比:
– 平板 > 手機 > 專業相機
• 一半的人(50%) 都在兩天之內會把相片上傳到Pixnet
上
• 玩專業相機的人喜歡一次上傳很多張圖片。
• 建議:
– 從圖上可以發現,專業相機和手機類的上傳時間差距很大,
是兩個不同族群。或許Pixnet可以為了手機用戶和專業相機
用戶分別設計適合其模式的上傳功能。
Question: 大家都在那裡拍照?
• 早上、下午、晚上,大家的拍照地點是否不
同呢?
• 應用方向
– 藉由大家拍照的地點,做出一套根據時間變化的推薦景點系統。
Question: 大家都在那裡拍照?
• 在地圖上不同的拍照地點,
提供不同時段的景點推薦
Question: 大家都在那裡拍照?
• 在地圖上不同的拍照地點,
提供不同時段的景點正妹推薦
Photo
metadata
拍攝時間
緯度
經度
Information extracted from open data
provided by PIXNET
文字敘述影像內容
2014 Pixnet Hackathonh - EXIF Mining

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2014 Pixnet Hackathonh - EXIF Mining