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烏克蘭兩家無人機開發商各自推出「遊蕩炸藥」的攻擊無人機，第一款由「A. Drone」開發的「Pilum」，可由少數單兵攜帶裝置，不須跑道即可架設彈射裝置發動，另一架則是Athlon Avia開發商提供，可垂直起飛的ST-35 「寂靜雷電」(Silent Thunder)，能針對市街區戰場中精準打擊
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What Are Ground Control Points (GCPs) and How Do I Use Them?
A Guide to Using Ground Control Points with Drone Mapping Software
If you work with drone mapping software, you’ve no doubt heard talk of ground control points (GCPs). Used often in the surveying industry, as well as in virtual design and construction, GCPs greatly increase the global accuracy of drone maps. Although they are not necessary in every situation, GCPs are a vital tool for precision mapping. But what exactly are ground control points? And how do you go about using them correctly?
To help crack the code on ground control points, we’ve put together this short guide to using GCPs with drone mapping software.
What Are Ground Control Points?
So what exactly are ground control points? Ground control points are large marked targets on the ground, spaced strategically throughout your area of interest. If you use ground control points with your aerial map, you first need to determine the RTK GPS coordinates at the center of each. (We’ll explain how to do this a little later.) The ground control points and their coordinates are then used to help drone mapping software accurately position your map in relation to the real world around it.
It might be helpful to think of your GCPs as a series of thumbtacks placed on your drone map. Because the drone mapping software knows the exact location of each of these “thumbtacks”, it can reference their locations when it matches up all of the other points on the map.
When and Why Are GCPs Important?
When used correctly, ground control points greatly improve the global accuracy of your drone map. That is to say, they help ensure that the latitude and longitude of any point on your map corresponds accurately with actual GPS coordinates. This is important in situations where precision mapping and true global accuracy are needed. As we mentioned above, surveying companies generally use GCPs, because a high level of global accuracy is important in most of the work that they do. Virtual design and construction is another sector that often requires this level of precision drone mapping.
Landpoint, a surveying company based in Louisiana, uses ground control points when creating drone maps used for topographical surveying. Using GCPs on an 85-acre map, their team conducted an accurate aerial survey, saving over 80 man hours compared to traditional land survey methods.
Each drone mapping project is unique, and not all projects require a high level of global accuracy. Because of this, it is important to assess each project individually before you decide to take the extra step of using GCPs. But generally speaking, projects like geo-referenced overlays, design documents and land title surveys benefit from the use of ground control points. In an upcoming post, we’ll take a deeper look at which types of projects are best suited for using GCPs.
How to Construct a Ground Control Point
There is no one right way to make a ground control point. One important thing to remember is that the GCP must be easily visible in your aerial imagery. This is achieved by using high-contrast colors and by making sure the ground control point is large enough to be seen from your particular flight altitude. We generally recommend flying at 300 feet with a frontlap and sidelap of 70/75 when using ground control points. Keep in mind that this may change dependent upon the area you are mapping. Learn more by reading our recent post about mapping accuracy and reviewing our GCP support documents.
A number of companies do sell pre-made, portable ground control points. However, many drone users simply fashion their own.
This well constructed GCP was spray painted onto the concrete using a stencil. Notice that the marker is large enough to be visible from far away. A center mark helps eliminate any confusion as to where the center point is located.
If you’re unable to mark GCPs with paint, there are a variety of low-cost ways to make markers with items available from any local hardware store. The weather-resistant rubber and vinyl markers seen above end up costing about $5 each and are very durable.
Measuring the Location of Your GCPs
As we mentioned above, it is important to measure the GPS coordinates at the center of each ground control point. To do this, you need either a Real Time Kinematic (RTK) or Post Processing Kinematic (PPK) GPS receiver. Trimble and Leica products are commonly used for high-accuracy GPS measurements. New, lower-cost alternatives have recently come onto the market as well. Hiring a surveyor to measure the location of your ground control points is also an option.
Do not use a phone or tablet to measure the location of your ground control points. The accuracy of these devices is very similar to that of a drone’s onboard GPS system and will not deliver precise results. Instead, use one of the previous methods listed above, such as an RTK or PPK GPS receiver.
Best Practices for Using Ground Control Points with Drone Mapping Software
Of course, if you use ground control points with drone mapping software, it is important to use them correctly. Follow these best practices to help ensure your GCPs serve their intended purpose and improve the accuracy of your map.
Use a minimum of 4 large GCPs: DroneDeploy requires a minimum of 4 ground control points. Each should measure at least four feet. No more than 10 are usually needed for larger maps.
Evenly distribute your GCPs on the ground: For most maps of moderate size, we recommend 5 GCPs, one located near each corner and one located in the center, as pictured above. Also, make sure GCPs are spaced far enough apart, to avoid confusion. As a general rule, if you can see more than one GCP in an image, they are too close together.
Create a buffer zone around your map’s perimeter: We recommend a buffer zone between the edges of your map and any ground control points. This ensures there is enough image coverage to carry out reprocessing. The size of your buffer zone should be somewhere between 50–100 feet, depending on the overlap of your flight. A higher overlap produces more images and generally requires less buffer zone.
Be aware of elevation changes: If the area being mapped has noticeable elevation changes like hills, mines and valleys, make sure to place at least one ground control point on each of the different major elevations.
Make sure your GCPs are unobstructed: Visual obstructions like overhangs, snow, shade or glare make ground control points difficult to identify on your drone map.
Know Your EPSG code: Before processing your map in DroneDeploy, you must enter the EPSG code that relates to your GPS measurements. Choose your EPSG code by modifying the settings of your GPS measurement device. In most cases, we recommend using WGS84 (EPSG: 4326).
[VIDEO]Taiwan is holding its annual Han Kuang live fire military drills
this week, and on Thursday, Taiwanese Air Force and Army soldiers
enacted how they would defend a Taiwanese military base from an
airborne invasion by an opposing force, widely believed to be mainland
China.
A total of 4,200 soldiers and reservists took part in today's
exercise. For the first time, civilian drone companies were enlisted to
launch surveillance drones.
See how Taiwanese forces -- including attack helicopters and tanks
-- respond when enemy paratroopers land on Taichung's Air Force
base and try to take over, in this mock exercise.
Video at Focus Taiwan: http://vod.cna.com.tw:8080/VOD-DATA/engnews/201806/004330909_d7779d13-a6df-4f31-975f-bf28373b3535.mp4
101官方頻道影片：https://youtu.be/hOdsCgkMfXQ
VACS團隊幕後全紀錄：https://youtu.be/JX5AVZ_x1Vk
今年2021台北101跨年煙火
首次使用8吋穿越機搭載Sony A7S3
第一人稱與煙火共同綻放
帶來全新視角迎接新的一年
工作人員：
總指揮Director & Producer：魯佳寶
影像總監Image Director：胡星培
技術支援Technical Support：王懷
穿越機飛手Drone Operator：蕭宇哲、莊定一、康覺之
空拍機飛手Drone Operator：柯竣元、陳坤暐、陳俊廷
動態攝影師：齊培丞、朱皓、王啟權、黃詠澤
剪輯師Editor：黃詠澤、黃正明
攝影助理Assistant Camera：葉羽軒、許家綸
觀察手Observer：孔祥儒
協調員Coordinator：葛康寧
法務Legal Counsel：陳文榛、秦偉翔
製作團隊Production Team：VACS攝視度
作業名稱：台北101跨年活動拍攝
申請案號：AB2009150006
NOTAM號碼：A3584/20
本公司團隊人員皆為專業飛手，執行期間備有技術人員及安全措施，飛行任務及飛機本身皆有投保相關意外險。
試飛測試期間均獲得台北101及相關管理單位(民航局/信義分局）同意後飛行。
特別感謝Special Thanks
台北金融大樓股份有限公司
台北市政府警察局信義分局
台北世界貿易中心
台北市政府消防局
交通部民用航空局
協力廠商Alliance companies
Sony台灣索尼股份有限公司
Synology群暉科技股份有限公司
Dji 深圳大疆創新科技股份有限公司
Trans TEC 創世泰克有限公司
Joraku 上洛股份有限公司
Carl Zeiss卡爾蔡司股份有限公司
Insta360影石創新科技有限公司
Yunglien 湧蓮國際有限公司
Ruen 潤橙實業有限公司
YC Onion洋蔥工廠
#Taiwan #SonyTaiwan #DJI #TransTEC #ZeissCamera #LensesTaiwan #LaowaTaiwan #Synology #Joraku #Insta360 #Ruen #Yconion #Fireworks
#NewYear1跨年煙火
台北101官方正片連結：
https://youtu.be/hOdsCgkMfXQ
https://youtu.be/m6-cvwH5wGU
全程使用4K60拍攝製作
加入目前最新穿越機搭配A7S3刷煙火
並於1/1當天進行5小時快剪於一早首播正片
工作人員：
總指揮Director & Producer：魯佳寶
影像總監Image Director：胡星培
技術支援Technical Support：王懷
穿越機飛手Drone Operator：蕭宇哲、莊定一、康覺之
空拍機飛手Drone Operator：柯竣元、陳坤暐、陳俊廷
動態攝影師：齊培丞、朱皓、王啟權
剪輯師Editor：黃詠澤、黃正明
攝影助理Assistant Camera：葉羽軒、許家綸
觀察手Observer：孔祥儒
協調員Coordinator：葛康寧
法務Legal Counsel：陳文榛、秦偉翔
作業名稱：台北101跨年活動拍攝
申請案號：AB2009150006
NOTAM號碼：A3584/20
本公司團隊人員皆為專業飛手，
執行期間備有技術人員及安全措施，
飛行任務及飛機本身皆有投保相關意外險。
試飛測試期間均獲得台北101及相關管理單位(民航局/信義分局/臺北市政府消防局）同意後飛行。
特別感謝Special Thanks
台北金融大樓股份有限公司
台北市政府警察局信義分局
台北世界貿易中心
台北市政府消防局
交通部民用航空局
協力廠商Alliance companies
Sony台灣索尼股份有限公司
Synology群暉科技股份有限公司
Dji 深圳大疆創新科技股份有限公司
Trans TEC 創世泰克有限公司
Joraku 上洛股份有限公司
Carl Zeiss卡爾蔡司股份有限公司
Insta360影石創新科技有限公司
Yunglien 湧蓮國際有限公司
Ruen 潤橙實業有限公司
YC Onion洋蔥工廠
VACS攝視度影像有限公司
聯繫電話：0912-318-283
Email：vacs@vacs-ltd.com
獲得素材許可 For licensing this footage：vacs@vacs-ltd.com
公司網站：http://vacs-ltd.com/
IG：https://www.instagram.com/vacs.ltd.tw/
FB：https://www.facebook.com/VACS.ltd.tw/
#台北101 #SonyTaiwan #DJI #TransTEC #ZeissCamera #LensesTaiwan #LaowaTaiwan #Synology #Joraku #Insta360 #Ruen #Yconion #Taiwan #Taipei #Fireworks #NewYear
「Ghost Recon」は、夜21時くらいから2時間位で放送します。（21～22時の間）
ガバガバAIMなので攻略や参考には一切なりませんが「笑い」だけは取っていこうかと思います。
Since only Japanese can be done, say the remarks in the etymology of other countries from her
※ https://translate.google.co.jp/
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理解出来ない方は、一時的にコメントブロックする可能性がありますので、ご了承ください。
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= お願い =
フレンド申請はアーカイブを見て、「どんな人？」かってのを見て良かったらでいいのでフレンド申請して下さい。
coopミッション中では「ゲームに参加したい」と言う前に「配信詳細」を見て理解ある方でしたらOKです。
あまり参加されない方からフレンド削除する事もあるのでご了承下さい。（フレンド数は有限なので一杯になり次第です）
See the details in the below for some past videos too
If it is good, highly appreciated, subscribed to the channel
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「再生リスト/playlist」
【－私個人の趣味－】
【波動硝子工芸舎】 hadowglass Collection ガラスアート制作動画
https://www.youtube.com/playlist?list=PLyFGe5mHHiQPLxgFUiiPjyGYi5EbnTtci
DETARAME JAPANESE CHANNEL
https://www.youtube.com/playlist?list=PLyFGe5mHHiQNoyNOgA4i8xe5W4YEHVAnH
youtubeの色んな説明とか
https://www.youtube.com/playlist?list=PLyFGe5mHHiQMWP9dOS53xKr5NAk1AlRDF
【various】 色々な動画シリーズ！
https://www.youtube.com/playlist?list=PLyFGe5mHHiQNLfGM-M88DxX4pBDzjBJq0
「－GAME－」
レトロゲーム実況！FINAL FANTASY 全員同じジョブでクリアしてく
https://www.youtube.com/playlist?list=PLyFGe5mHHiQPtDdILoUB1Gaze03cm2V6u
【Awesomenauts】[Gnaw : Gnabot Skin : Japanese player]
https://www.youtube.com/playlist?list=PLyFGe5mHHiQP-R_nrMtsXsDFTxlWaF8VV
【実況！2周目】The Witcher 3 Wild Hunt
https://www.youtube.com/playlist?list=PLyFGe5mHHiQOhMAREG69Z2IcHK5E-WQVR
【PC steam】MGO3 Road to interrogation 【10,000】 times
https://www.youtube.com/playlist?list=PLyFGe5mHHiQPUjkqUOMBS0LjmAQ3VJKv8
【レトロゲーム実況！】FINAL FANTASY 全員同じジョブでクリアしてくシリーズ
https://www.youtube.com/playlist?list=PLyFGe5mHHiQPtDdILoUB1Gaze03cm2V6u
【Retro game】レトロゲーム！昔のゲームをやっていく！
https://www.youtube.com/playlist?list=PLyFGe5mHHiQNblPlDCQiTe4AzrfhpWSWv
【steam（スチーム）】ってゲームサイトで購入したゲームをやっていきます
https://www.youtube.com/playlist?list=PLyFGe5mHHiQPmlAyRxzy6Pl0S5F1tlICj
【Ys】: PCE CD ROMROM版
https://www.youtube.com/playlist?list=PLyFGe5mHHiQNU3eLImdVF8ICMuIwkaX2u
UBISOFT
https://www.ubisoft.com/en-US/company/overview.aspx
UBISOFT Official HP
http://www.ubisoft.co.jp/
UBISOFT CLUB
http://www.ubisoft.co.jp/ubisoftclub/
UBI Official shop
http://ebten.jp/ubishop/
UBISOFT linkedin
https://www.linkedin.com/company/2528
ｰ SNS ｰ
UBISOFT youtube
https://www.youtube.com/user/ubisoft
UBISOFT twitter
https://twitter.com/Ubisoft
UBISOFT facebook
https://www.facebook.com/ubisoft
UBISOFT instagram
https://www.instagram.com/ubisoft/
推奨スペック
OS: Windows 7 SP1, Windows 8.1, Windows 10 (64-bit versions only)
プロセッサー: Intel Core i7- 3770@ 3.5 GHz or AMD FX-8350 @ 4 GHz or better
メモリー: 8 GB RAM
グラフィック: NVIDIA GeForce GTX970/GTX 1060 or AMD R9 390/RX480 (4GB VRAM with Shader Model 5.0 or better)
ストレージ: 50 GB 利用可能
サウンドカード: DirectX-compatible using the latest drivers
配信を考えるならもっと高いスペクで
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