วันที่ 26 สิงหาคม 2563 นี้ เตรียมพบกับอัปเดตสุดปังปุริเย่จากเกม Project V4 ที่เพิ่งจะเปิดตัวให้เหล่าเกมเมอร์ได้สัมผัสความอลังการพร้อมกันทั่วโลกในเดือนกรกฏาคมที่ผ่านมา บนระบบ cross platform ที่ผู้เล่นสามารถสร้างแค่บัญชีเดียวก็เล่นได้ทั้งบนมือถือและพีซี ดาวน์โหลด Project V4 เพื่อสัมผัสเนื้อหาใหม่สุดอลังการได้แล้ววันนี้ที่ App Store, Google Play และ Nexon Launcher
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ตั้งแต่วันนี้เป็นต้นไป เตรียมออกทัพไปสู่ดินแดนที่ไม่มีผู้ใดล่วงรู้ เตรียมออกไปผจญภัยในดินแดนที่ไม่เคยได้ไปเยือน และเตรียมพบกับความท้าทายมากมายในพื้นที่ใหม่ ที่เรียกว่า ที่ราบสูงวิเทน (Viten Highlands) และที่ราบสูงมายา (Highlands of Illusion) บอกเลยว่า คราวนี้ได้ใช้เกียร์ Soulstone และ Dark Imprint Stone แน่นอน… ถ้าพร้อมแล้วก็เตรียมลุยเลย!
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V4 | แนะนำแผนที่ | ที่ราบสูงวิเทน
https://youtu.be/22tB57YJIGo
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อัปเดตใหญ่ยักษ์ครั้งแรกมาเยือนทั้งที แน่นอนว่า Project V4 ก็ได้เตรียมกิจกรรมสุดพิเศษมาให้ผู้เล่นแบบจัดหนัก จัดเต็ม 10 วัน 10 การ์ดอาร์คานา ให้แฟนๆได้รับคูปองไอเทมกันแบบฟรีๆ มูลค่ารวม 3,500 บาทกันไปเลยจุกๆ ตั้งแต่วันนี้ - 31 สิงหาคม 2563 นี้ พบกับกิจกรรมไขความลับพื้นที่ใหม่ ที่ราบสูงวิเทน บนเว็บไซต์ Project V4 เข้าไปรับไอเทมกันเลย ที่นี่ !! อย่ารอช้า!!
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Project V4 ได้ดึงดูดผู้เล่นมากมายด้วยกราฟิกสุดปังระดับ Unreal Engine 4 และตัวละครที่สามารถเลือกการปรับแต่งมากกว่า 50 รายการ สามารถติดตั้งอาวุธและชุดเกราะที่ทรงพลัง เพื่อช่วยในการต่อสู้และปลดล็อกศักยภาพทั้งหมดได้
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นอกจากนี้ Project V4 ยังมีคุณสมบัติการเล่นข้ามพีซีบนมือถือที่ไม่เคยมีมาก่อน ซึ่งช่วยให้ผู้เล่นทั่วโลกสามารถดำดิ่งสู่โลกที่อุดมสมบูรณ์ของ Syllunas ได้ตลอดเวลาไม่ว่าจะอยู่ที่บ้านหรือระหว่างเดินทาง จะเปิดฟาร์มหรือออกไปตีบอสบนจอไหนก็ทำได้หมด ทุกที่ ทุกเวลา
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เตรียมสร้างพันธมิตรเพื่อพิชิตสนามรบในประสบการณ์ผู้เล่นแบบเรียลไทม์ที่เต็มไปด้วยแอ็คชั่นกับผู้เล่นและผู้เล่นกับสภาพแวดล้อม (PvPvE) ตั้งแต่ก้าวแรกที่เข้าสู่โลกสุดแฟนตาซีของ Project V4 สุดยอดเกม MMORPG แห่งปี 2020 ได้แล้ววันนี้
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Project V4 เปิดศึกแล้ววันนี้ พร้อมพื้นที่ใหม่สุดท้าทาย ท่ามกลางพายุหิมะ ดาวน์โหลดเลย
https://bit.ly/3aTKr7a
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ติดตามอัปเดตข่าวสารและกิจกรรมเพิ่มเติมของสุดยอดเกม MMORPG Project V4 ได้ที่
https://th.nexon.com/v4/th/main
https://www.facebook.com/TH.V4Global/
https://bit.ly/3huaeoN
This 26 August 2563, prepare to find a great update from the project V4 game that has just launched for Gamers to experience the extravaganza worldwide in July. In the past, on the cross platform that players can create just one account, they can play both on mobile and PC. Download Project V4 to experience new and magnificent content today at App Store, Google Play and Nexon Launcher.
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From now on, prepare to go to a land where no one knows. Prepare to go on an adventure in an unreleased land. Prepare to meet many challenges in a new area called Viten Highlands (Viten Highlands) and Maya Plains. (Highlands of Illusion) I can tell that I will use Soulstone and Dark Imprint Stone for sure... If you are ready, get ready!
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V4 | suggests map | vintage plateau
https://youtu.be/22tB57YJIGo
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The first big update has arrived. Project V4 has prepared a special event for players to get 10 days 10 Arcana cards for fans to receive an item coupon. Free style. Total value of 3,500 baht. From today-31 August 2563 Let's find a secret activity on the Project plateau. Get items here. !! Don't wait!!
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Project V4 has attracted a lot of players with superstructive graphics of Unreal Engine 4 and more than 50 custom characters can install powerful weapons and armor to help fight and unlock potential. All is fine.
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Project V4 also features unprecedented mobile crosspiece that allows global players to dive into the fertile world of Syllunas at any time, at home or on the commute, on the farm or on the screen. I can do it anywhere, anytime.
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Prepare to build partners to conquer the battlefield in a real-time, action-packed real-time player experience with the players and players of the environment (PvPvE) from the first step into the fantasy world of Project V4 the 2020 MMORPG game. Today is today.
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Project V4 is open today with new challenging areas in the snow storm. Download now.
https://bit.ly/3aTKr7a
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Stay tuned for more updates, news and events of the ultimate MMORPG Project Project at
https://th.nexon.com/v4/th/main
https://www.facebook.com/TH.V4Global/
https://bit.ly/3huaeoNTranslated
global snow map 在 Overwatch.blue Facebook 八卦
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).
global snow map 在 Madison map, University of wisconsin-madison, Map - Pinterest 的八卦
Apr 29, 2016 - World snow depth, by UW-Madison #map #snow #world. ... <看更多>
global snow map 在 North America Snow Cover (2009-2012) [1080p] [3D converted] 的八卦
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