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Messages - JMR

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How were the annotations written on raw images?

General / Re: how to remove GPS data from UAV picture ?
« on: June 09, 2020, 01:13:01 PM »
Select photos in reference window and choose clear locations.

General / Re: Beginner's question: photo vs camera alignment
« on: June 07, 2020, 08:00:16 PM »
Touché! too long story. I do it a lot, sorry.
Just to top it off. I like the indistinct use of several words for the same as a sort of, literary license. Like when you write about a cathedral and try to use other words to avoid repetition: the temple...., the building..., the monument...

General / Re: Beginner's question: photo vs camera alignment
« on: June 04, 2020, 07:42:15 PM »
Hello Eponymous:
Photo and camera can be used to mean the same thing, but  if you want to make a distinction, when it comes to photogrammetry, a photo is a two dimensional thing while a camera means here a photo linked to the lens and camera body together forming a complex thing which is three dimensional, that is called camera for language economy, just for the same reason we say "photo" instead of "photography".
So in the program they use indistinctly the two words because a photo without lens parameters associated is not even something you would be able to use. Just imagine that you remove your lens from your camera and press the trigger button.  The light will hit the sensor and you will get something you can call photo even if it is a blurred likely burnt mess or perhaps an invaluable piece of art that someone could even pay for, but that photo would never be called a camera here.
So "photo" is not enough word while calling "camera" to a photo is like to borrowing the name of the device that produces it. Well it is perhaps something you can dislike metonymy, but what if I remind you that "camera" means actually "room" in latin?

General / Re: New feature in Metashape. Can I turn it off?
« on: May 23, 2020, 06:52:58 PM »
This annoying dialog has already been made optional in 1.6.3 Thanks, Agisoft for listening us.

General / Re: Creating an Accurate 3D Model that is Easy to Measure
« on: May 23, 2020, 06:45:05 PM »
In my opinion the built in measurement tools is almost unusable but for very rough and fast queries, the measurement resolution changes inconsistently from one measurement to another, measurements are not persistent, you cannot take several measurements at once without doing accumulative, etc... I never use this tool. However, with regard to your question, yes, filtering by selection will somehow replace one long term missing feature yet standard in plenty of programs: clipping boxes.
Also, your complain about not being able to move to another place during measurement is not right. You actually can pan, rotate and zoom to another place from one measurement end to the other:
ctrl+shift+left button down+drag for view rotation (also works with al+shift+left button down+drag)
shift+left button down+drag up and down for zoom in/out (the mouse wheel is also working)
ctrl+left button down+drag for panning (also works with alt)

My suggestion for accurate measurements it is to use scale bars and get distances from estimated values of distance. An alternative is drawing lines and later retrieve their length by means of the shape measurement tool.


Hello: I'm regularly offering online training, (I've worked with collision documentation specialists too). drop me a mail and provide contact details so we can discuss about options.


Thank you soooo much!
Best regards and health!

PLEASE Agisoft, remove tha dialog or make it optional, it is unbearable as is. Imagine after having stereo-digitized 22372 shapes. I had to downgrade to previous version to not commit  suicide.
Also, notice that the current way of rendering a point (shape) easily turns screen into a mess when there are plenty of them. You should enable cleaner rendering mode for displaying vectors in all views. (colored, please)
Also, please enable a reasonable way to toggle view of markers attached to shapes. they become totally intrusive and incompatible with visualization. What if you show them only on selected shape/s?
Best regards

the focal length in mm, doing the formula I obtain
? it does not make sense, your focal length in mm can't be sub mm for a sensor this size

The camera calibration dialog gives you several formats when you try to save parameters. The USGS format for example, will give you values in mm for F, and principal point. as well as pixel size.

YES please, give us a check box in the dialog and allow us to "use same properties for following shapes until tool change" or something. Having to close this dialog at every point is painful.


General / Re: mixing accurate photo locations with inaccurate
« on: March 23, 2020, 06:27:53 AM »
Unchecked cameras are aligned, but their coordinates don't participate in equations, so they are not disturbing the bundle adjustment.
if you have cameras with high accuracy  and others with low, you can set specific  values for each: One by one by doble click in accuracy cell and then enter value, or in groups by multiple selection, then right click and modify... accuracy.

if accuracy is similar in XYZ then enter a single value i.e. 0.005
if horizontal accuracy is higher than vertial, you can enter the two values separated by "/", i.e. 0.005/0.015
if you had independent x,y,z, accuracy estimations, you can enter the three values in the same way. i.e. 0.02/0.03/0.05


General / Re: Best practices and advice for processing P4RTK
« on: March 12, 2020, 03:24:35 PM »
I'd gladly give you some hints if you like. Also I can show you how gcp marking in MS can be really damn fast. Do not hesitate to contact me.

It seems this chunk has nor been referenced, that would explain no coordinates can be estimated.
A simple workaround could be to assign coordinates (with accuacy values as low as 10m) to four markers on your model defining a local system. As your main source of metric control are scale bars, dont worry about loosing accuracy because markers will be so low weighted that they will hardly have impact in your model.

1. Yes that the "clear" I meant. but after using it, unless you have cleared also projections, you should keep having estimated values for the marker and it should change every time you move its projections.
2. When you export the markers they all must have estimated values in coordinates unless they have no projections, so please make sure that your are checking the "save estimated values" in the export dialog


pd. out of curiosity. Why do you stay 1.5.1...?

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