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[GIS] ArcGIS Pro for Student Use 購買與啟用

前言

這篇有點像業配(怎麼可能會有…),是因為自己的研究項目需要可以呈現大範圍3D地理資訊資料,同時可以在上面標記等功能,因此看到 ArcGIS Pro for Student Use(下簡稱AGP)的定價尚在負擔範圍內,於是就購買了一個授權,也因為設定不熟悉,搞了很久,於是決定把過程記錄下來,方便未來想不到怎麼弄時使用。臺灣也有ArcGIS代理商,或許也可以直接詢問他們,

目標

這篇目標很單純,僅是記錄購買AGP以後,如何設定與成功啟動程式。

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[Py] Improve the the geotag of the photo from flight record (DJI Spark)

The location difference between geotags from the photos (red dot) and flight record from DJI Go 4 app (blue solid line). DJI Spark is an entry-class drone with affordable price; however, after several field trip, I found that the geotag of the photo marked by the drone is actually not precise enough for building a digital model. Two figure shows the difference can reach 10 to 20 meters. I wrote a small python script to substitute the GPS tag of the photo.
(中文在下面)
Symbol:
Red Dots: original geotag of the photo.
Green Diamond: modified geotag of the photo
Blue Line: Flight Record (GPS track)
Gray Line: Comparison between old and new location of specific photo.
 
大疆的Spark是比較負擔的起的空拍機,家父很久以前買了一台被我搶來用了。在野外飛過幾次以後,因為要建立數值模型或是正射影像,發現像片的地理座標精度很差,網路上也有這樣的說法。於是研究了一下,寫了個小小的程式用時間對比飛行記錄軌跡,並替換像片的GPS座標。下面兩張圖可以看出原像片與軌跡記錄的差距大概是十到二十公尺。
 
圖例:
紅圓點:原記錄。
綠方點:對比軌跡後新位置。
藍線:飛行軌跡記錄。
灰線:同張像片新舊位置。

[Photography] NTU spots for academic dress – Fu Bell

June is the season of graduation in Taiwan. Here I’ll recommend some great portrait photo spots for those who wear the academic dress.

The Fu Bell

The bell was built in 1951. The bell is built to memorize Fu, Ssu-nien, the previous president of NTU. The bell rings 21 sounds when class start and dismiss; it is because president Fu said that we need to spend 3 hours to think. The bell is also in the NTU emblem to show the spirit of NTU.

Map

Photo Example

The photo is taken by Nikon DSLR and Tamron 15-30 F2.8 VC. The wide-angle lens is suitable for this place because the surrounding space is quite limited here. Also, you may use the distortion to make the legs longer and get better body ratio. Four aspects can provide different background. You can always find the surprise in different season.

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Comment below if you want to know more 🙂

[Photography] NTU spots for academic dress – Gate

June is the season of graduation in Taiwan. Here I’ll recommend some great portrait photo spots for those who wear the academic dress.

The Main Gate

The gate was built in 1931 ( the Taihoku Teikoku Daigaku (台北帝国大学) period) with beautiful structure. It’s around 3 m height and looks like a fortress.

Map

Photo Example

The photo is taken by Nikon DSLR and Tamron 15-30 mm VC lens @ 29mm. The spot is suitable for both personal or group photo. The place is a little bit dangerous, however, because it is the main entrance/exit of the NTU campus. Pay attention at all time to make sure your own safety.Wide-angle lens (under 35 mm (35 mm frame equivalent )) is recommend.

Above photo is an actual group photo taken in the front of the gate of NTU. The people are blackened.

Comment below if you want to know more detail 🙂