關於 best paint markers ，我們在網路上蒐集到這些相關的討論、資訊與評價

Are you ready for the motherload?

WE ARE ON DAY 18 of self-quarantine and still really like each other! Here are some of our favorite play ideas that we've loved doing as a family and independently.

WE GOT THIS, MAMAS!!!

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SENSORY
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Oobleck (cornstarch + water)
Playdough (recipe saved under my highlights on ig @rachealkwacz)
Simple dough (flour + water)
Slime (recipe on ig!)
Organic slime (psyllium husk + water heated up)
Ice (add water, add salt, add food coloring, freeze it w a toy inside, the list is endless!)
Baths (bubbles, bath bombs, "swimming", use your sand toys, kitchen tools, etc)
Sily putty
Blutak
Clay
Mud (soil and water)
Clean mud (shredded paper + soap shavings + water)
Shredded paper
Newspaper
Jello
Rice
Barley
Beans
Lentils
Shaving cream
Sand
Salt

*Food sources are a precious commodity at the moment (we haven't been to a grocery store!) so we've really been conserving all our dry goods for however long we might need to quarantine for which means we're really rotating between just a few things (water, soil, slime, etc) so don't worry about having to come out with something new everyday. They are honestly happy to play with the same medium, it allows them to come out with different creations and explore deeper!

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MOVE
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Dance party
Yoga
Zumba
Stretch
Hide and seek
Treasure hunt
Obstacle course
Balls
Balance board
Bubbles
Jump rope
Bicycle
Scooter
Stairs
Jumping on the bed

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ARTS & CRAFTS
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Coloring - there are a ton of cool printables including a very fun one from sereni & shentel
Paint
Paper mache - glue w paste made from cooked flour and water
Markers
Cards
Stickers
Glue
Cutting
Different textures of paper
Cardboard painting

Honestly, Ella Grace has a little art table so she really just leads this. We just make the materials available for her and she comes out with some gems! My best advice however is for painting or anything that's "messy", let them paint in the shower! We strip her down, she paints on the glass to her heart's content, the clean up and hosing it down is part of the fun then a shower after! No stains on clothes, no worrying about wet paint or where to hang all the artwork later and best of all, minimal clean-up!

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ROLE PLAY
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The sky is the limit on this one and honestly, the world (or anything she can find within our four walls) is her oyster
Dress-up
Costume jewelry
Blanket - she has a soft bamboo muslin wrap from when she was little that she uses for everything. It's probably her most used toy in the house she plays w it so much - cape, hat, skirt, scarf, etc
Forts - use flat sheets or blankets and pillows and see what you can build with what you have!
Cardboard - build a robot suit or an entire landscape!
Restaurant - there's an instruction leaflet from a game that Ella Grace likes to use as a "menu" which again goes back to…use your imagination! You don't have to have a "kitchen" to play cooking!
Salon - hair, facials, manis, pedis, even daddy gets to have a go!
Construction - one of our favorite things to do is just build. We recycle old egg cartons, boxes, packaging materal, magnatiles - Bueno Blocks has an incredible selection of open-ended toys!
Real life - honestly this the best and total win-win! She helps me cook, cut, prep, mop, sweep, vaccuum, make beds, wipe, clean, etc and is actually a really big help!!

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ETC
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Reading (she does a lot of this both independently and together as a family)
Writing/activity books - this is really optional. Our ethos is play is learning and learning has to come from within so we don't push "school" at all. She has a bunch of workbooks gifted from various places that she likes to take out and work on whenever and we just allow it to be part of free play and because it's not a "chore" she loves it
Pretend cooking show!!
Podcasts (refer to previous post for our extensive list of favorites!)
TV time - she has set tv time while I make dinner and her favorite programs are Hi-5, The Wiggles, Fireman Sam, Paw Patrol! We also do movie night once a week and it includes snacks and lots of cuddling!
Gardening - grow a little patio/balcony garden. We planted some cilantro roots and sprouted onions!!
Friendship bracelets
Make a jumprope!
Learn a new language or skill
Picnic on your balcony if you have one or a pretend picnic in your living room!
Balls - seriously, there are so many things you can do w ball! Ella Grace had an entire afternoon of fun and made-up games by herself with just a little wooden ball and basket.

Mostly, just remember this. It's okay if they get bored. In fact, allow them to be. Remember the ball and the basket story? She had so much fun because we've actively allowed her to just explore, be creative, be bored, use her imagination, and not micromanage or set up all her play for her. The key to surviving and even thriving(!) isn't to plan out every second of their day, the key to surviving MCO is to trust her and allow room for adventure and fun. Be flexible. Freedom within boundaries, mama.

The only way through is to do it together and sometimes that means having her play by herself while I work and the other times, it means really checking in, being present, and playing along with her!

That's the secret.❤

Share the love with your mama tribe! xx

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).

สวัสดีค่ะทุกคน ขอฝากข้อความนี้ไปยังนักกีฬาที่เข้าร่วมการแข่ง Roboman และท่านที่ได้ยินเรื่องราวเส้นทางจักรยานค่ะ
ยังไงหวานก็เชื่อว่าพี่โบ้ผู้จัดการเค้าทุ่มเทสุดตัว ให้กับการจัดทางทั้งว่าย ปั่น วิ่ง อยากให้เป็นกำลังใจให้พี่เค้า พวกเราจะได้ไปสนุก เสียเหงื่อ แชร์รอยยิ้มกันอีกปีหน้านะคะ 😊✌

ฝากให้ทุกคนด้วยครับ

เรียน นักกีฬาสมาชิกกลุ่ม O2max
ผมต้องขอโทษทุกท่านเรื่องความไม่สมบูรณ์ในเส้นทางจักรยาน ROBOMAN เมื่อวานนี้ ผมขอชี้แจงว่าเดิมทีผมตั้งใจจะพ่นสีบอกทางที่พื้น (ตามภาพในไฟล์แนบ) และได้ร้องขอไปแต่ต้นว่ารูปแบบเป็นเช่นในภาพ และได้รับการตอบตกลงตามแบบในภาพ แต่กว่าจะทราบว่าไม่ได้รับอนุญาตให้พ่นพื้นก็ไม่เหลือเวลาให้ผมผลิตป้ายบอกทางได้ทัน ทางออกที่ผมทำได้ดีที่สุด คือ อาศัยกำลังเจ้าหน้าที่ทหารจำนวน 65 นายยืนประจำจุดเพื่อบอกทาง แต่แล้วสิ่งที่ไม่คาดคิดก็เกิดขึ้น มอเตอร์ไซค์ของนักข่าวและช่างภาพจำนวนมากเข้ามาในเส้นทางปั่น ซึ่งถึงจุดนี้เกินกว่าที่ผมคนเดียวจะควบคุมได้ ผมต้องขอโทษทุกท่านมา ณ ที่นี้ และท้ายที่สุดขอขอบคุณนักกีฬาทุกท่านที่มาร่วมงาน และหวังเป็นอย่างยิ่งว่าท่านจะได้รับความสนุกกลับไปบ้างไม่มากก็น้อย
ด้วยความเคารพ
จุลินทร์ โออภิรัตน์
ปล. สิ่งที่ผมให้ความสำคัญมากที่สุดในการแข่งขัน คือป้ายบอกทางและป้ายระยะ จุดที่สังเกตุเห็นได้ดีสุดคือ ทางน้ำ ที่ทำงานได้สมบูรณ์ 100% ต้องขอขอบคุณครูวสันต์ อดีตนักกีฬาว่ายน้ำที่เข้าใจความสำคัญของเรื่องนี้

Dear Athletes,
I would like to apologize for any inconveniences which may have occurred on the bike course of the ROBOMAN yesterday.
Initially I intended to have paint markings on the pavement (attached is a photo of the intended markings) but received orders that markings on the surface were not allowed. By the time I was informed of this, there was not enough time to have signs made. The best solution I could come up with was using 65 officers at various points on the route to give directions. Unfortunately, the unexpected happened when reporters and photographers entered the race route. At this point, this way beyond my capacity to control the situation.
I would like to apologize to everyone and also thank you for coming to the race. We hope that you were still able to enjoy the race and had a good experience.
Sincerely,
Julin Oapirat
PS. The most important aspect of races for me are direction signs and distance markers. This was most evident on the swim course, which was 100%. We have to thank Kru Wasan, former swimmer for understanding the importance of this aspect.