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Messages - Phogi

Pages: 1 [2] 3 4 ... 7
16
General / Is there a way to put mask from sparse point cloud to image?
« on: October 06, 2020, 02:24:53 AM »
Hi Alexey,

Is there a way to draw mask for selected area from sparse point cloud / ortho to the photos, rather than draw mask each image with same mask? What I want to do is creating point cloud with very high desnity in some AOI, is that possible? Or is it possible to create point cloud with high density in some part and lower in not interested part to speed up?

Thank you!

17
Bug Reports / Re: Possibly Wrong conversion in EPSG 5513
« on: August 28, 2020, 12:33:35 PM »
Thank you Alexey, it seems that's some issue with gdal or epsg.io, much appreciate for the details!!

18
Bug Reports / Possibly Wrong conversion in EPSG 5513
« on: August 25, 2020, 02:55:25 AM »
Hi Alexey,

I found some post before regarding EPSG 5513 / 5514 support, which is great, however when I am converting GCPs from WGS84 to EPSG:5513 and 5514 they show different sign (positive vs negative), but in EPSG.io they are the same: https://epsg.io/transform#s_srs=5513&t_srs=5514&x=-527358.6200000&y=-1140103.1800000

Which one is correct? By checking the proj4 string definition they are exactly the same in Metashape, so why there's a different sign for output? I know there's SW vs NE axis but not sure which source is correct.

Hope to hear from you soon.

Best,

19
Bug Reports / Re: proj4 definition not match with WKT EPSG 2056
« on: March 18, 2020, 04:05:56 AM »
Hi Alexey,

It seems the WKT is different shown to the proj4 string returned, can you check if the projection parameters are correct?

Best,

20
General / Understanding confidence map of dense point cloud
« on: March 10, 2020, 06:41:52 AM »
Hi Friends,

Can anyone provide some info about the confidence map of Dense Point cloud? With the 0 to 255 level it works well with removing some noise, but I saw a weird image and interested to know how this confidence map related with image overlap, and how it is calculated for that pattern.

Best,

21
Bug Reports / proj4 definition not match with WKT EPSG 2056
« on: March 10, 2020, 06:07:22 AM »
Hello Alexey,

I found the EPSG: 2056 in Metashape returned different proj string to the WKT:
Proj4:

'+proj=omerc +lat_0=46.95240555555561 +lonc=7.439583333333329 +alpha=90 +gamma=90 +k_0=1 +x_0=2600000 +y_0=1200000 +ellps=bessel +units=m

WKT:
'PROJCS["CH1903+ / LV95",GEOGCS["CH1903+",DATUM["CH1903+",SPHEROID["Bessel 1841",6377397.155,299.1528128,AUTHORITY["EPSG","7004"]],TOWGS84[674.374,15.056,405.346,0,0,0,0],AUTHORITY["EPSG","6150"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9102"]],AUTHORITY["EPSG","4150"]],PROJECTION["Oblique_Mercator",AUTHORITY["EPSG","9815"]],PARAMETER["latitude_of_center",46.95240555555561],PARAMETER["longitude_of_center",7.439583333333329],PARAMETER["azimuth",90],PARAMETER["recitified_grid_angle",90],PARAMETER["scale_factor",1],PARAMETER["false_easting",2600000],PARAMETER["false_northing",1200000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","2056"]]'

From http://epsg.io/2056 the projection in proj4 should be +proj=somerc rather than +proj=omerc. It's interesting that the conversion is correct, so I assume the conversion is not using proj4 string is it?

Thanks

22
Bug Reports / Re: Different WKT definition to EPSG.io
« on: December 09, 2019, 01:12:45 AM »
Thank you Alexey!

23
Python and Java API / Re: Help in localframe explain
« on: December 06, 2019, 08:42:18 AM »
Thank you Alexey!

I got another question, could you help to identify?
I found
camera.project(chunk.markers[0].position)
and
markers[0].projections[camera].coord
both can return the x/y of the image pixels, but they are different, could you tell me which one should be the correct one?

Thanks!

24
Bug Reports / Re: Different WKT definition to EPSG.io
« on: December 03, 2019, 09:30:43 AM »
Hi Alexey,

I also notice that for this projection it seems the coordinate transformation is not correct, conversion seems wrongly added based on the EPSG.io's transformation.

For example, a point in EPSG: 3153 (1213336.088, 465211.399, 3.368) (E/N/H) converted to WGS84

in Agisoft will return [-122.30268840679987, 58.556709548457782, 3.2393043], (Already outside of Alberta area!)

in epsg.io will return [-123.0771235,49.1635985].

So there's something wrong with the conversion tool!
Could you take a look and check if this will be fixed?

Thank you!

25
Bug Reports / Different WKT definition to EPSG.io
« on: December 03, 2019, 05:28:32 AM »
Hello support,

I find that NAD83(CSRS) / BC Alberts EPSG:3153 in Agisoft has different WKT definition to http://epsg.io/3153.

In Metashape the toWGS84 defined as TOWGS84[-0.991,1.9072,0.5129,0.025789907519493,0.009650098960270401,0.011659943232342,0],

while in EPSG.io it is [0,0,0,0,0,0,0].

Is this a bug or different database for Agisoft referred to?

Thanks!

26
Python and Java API / Re: Help in localframe explain
« on: December 02, 2019, 09:49:55 AM »
Aha I generally got the answer from different threads, since the camera errors need to be calculated in the same unit, while if directly subtract estim position to source position they can be degrees which is not correct. In localframe I suppose the unit is meter, then can scale to other unit if needed?

27
Hello everyone,

I have tried two different ways to project marker to the image plane, and I searched in the forum to find two ways:
(1)
marker = chunk.markers[0]
x0, y0 = marker.projections[camera].coord

(2)
camera.project(chunk.markers[0].position)

Method (1) returns Vector([2046.1069456339237, 1142.9500712869672]), while method 2 returns (2046.3900146484375, 1143.6800537109375).

Since both starts from estimated values, I am expecting they are the same, but they are different. Could someone explain why there's difference? Or if I should compare the integer but the Y has about 1 pixel difference...

Thanks a lot!

28
General / shift point clouds and all outputs
« on: December 02, 2019, 07:16:51 AM »
Dear support,

Is there any method to apply extra shift to the dense point cloud, and the following outputs continuing to work based on this shifted point cloud?

I found some thread mentioned to try project ortho photos to reloaded dense point cloud from external resource, is this possible to do so now?

Thanks!

29
General / Re: Agisoft Metashape 1.6.0 pre-release
« on: November 27, 2019, 09:51:18 AM »
Hi Alexey,

I'm not sure if this is a bug, when I export depth map using GUI, if I specify the image route individually, it will return error. If I don't specify route but remain it as {filename}, and select folder in the end, it would work.

See attached screen snippings.

Thanks!

30
Thank you Alexey! So would the out of focus blurry possibly be detected by some function in Agisoft? The current quality estimation function works 99% cases, but just some out of focus images are still estimated as high quality but features are very blurry to see.

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