apriltag

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Fixed refine_edges keyword to allow it to be referenced in Python

2

This is to solve Issue #243. The functionality was already there, but "refine-edges" can't be used as a keyword argument in python because of the '-'.

DanielChaseButterfield

'refine_edges' is an invalid keyword argument

5

**Describe the Bug:** The file `apriltag_py_type.docstring` states the following: ``` The constructor takes a number of arguments: ... - refine_edges: When non-zero, the edges of the each quad are adjusted...

DanielChaseButterfield

Memory corruption inside gradient_clusters?

2

I'm building AprilTag from source (commit bee5efb1cc263ec1459bca46193e3428220d52ba) using a custom CMake file and adding a couple extra files to allow access from the JNI. The AprilTag source code itself is...

Windwoes

Incorrect C example

5

The following example copies detection data in a pointer type (`apriltag_detection_t *`) instead to value type (`apriltag_detection_t`). This causes the `zarray_get` to write to memory on stack outside its bounds...

mitjap

How to find the linear distance between the camera and the tag in the code of Apriltags?

1

I know that pose.R and pose.t represents the rotation matrix and translation vector of tag relative to the camera coordinate system respectively. The X distance of the tag relative to...

playezio

Adding check for length 0 in fit_line to avoid NaN

11

When dividing by 0 a NaN is introduced to the lineparm, this is eventually introduced to the quads and causes failures later in detection such as quad building. I tested...

jrepp

Replace DEFAULT_ALIGNMENT_* macros with exported constant

1

Hi apriltag devs. I'm working on the Rust bindings for this library, and here is my humble suggestion to better glue the library with Rust bindings. The `image_u8_create()` function assumes...

jerry73204

Some questions about reliability of identification

3

Im working on a project that landing a copter on the apriltags ,here comes some diffculties,the first is that when the copter is very close to the apriltag, I found...

meihe323

propose another method for estimating tag position.

4

Hello, My name is Weixu Zhu. I'm a PhD student in IRIDIA lab, Université libre de Bruxelles. When using estimate_tag_pose, I got "Error, more than one new minima found" pretty...

freedomcondor

Update Detector Parameter Descriptions

1

This PR updates the comments about parameters in the apriltag detector to give the user a better understanding of valid ranges and default values

QuentinTorg