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2020-04-13 02:08:21 -0600	edited question	How to detect foreign objects on a plane? What is the best approach to detect any object on a plane? Hello! My task is to detect whether table clean or not. My c
2020-04-13 02:08:16 -0600	edited question	How to detect foreign objects on a plane? What is the best approach to detect any object on a plane? Hello! My task is to detect whether table clean or not. My c
2020-04-13 01:30:06 -0600	asked a question	How to detect foreign objects on a plane? What is the best approach to detect any object on a plane? Hello! My task is to detect whether table clean or not. My c
2019-08-27 05:08:53 -0600	asked a question	How to make the disparity map filter not adapting? How to make the disparity map filter not adapting? Hello! I am using WLS filter for beautify and stabilize disparity map
2019-08-16 05:53:53 -0600	received badge	● Teacher (source)
2019-08-12 13:21:58 -0600	marked best answer	How to calculate surface roughness in disparity map? Hello! I am developing small project connected with security. I created simple face detection/recognition and stereo matching. So i have disparity map of the face region. The first disparity map belongs to real face, the second is photo of the face showed from the phone. I want to determine where is real and where not. i think that for this propose can be used something like "surface roughness", but i cant figure out how to calculate it. Please tell me the method can be used for calculate "surface roughness", or better way to do the same. Thanks!
2019-08-11 01:59:34 -0600	marked best answer	How to implement indoor SLAM in mobile robot with stereo vision? Hi there! I am currently developing a autonomous humanoid home assistant robot. This robot have two cameras and stereo vision. I want to make this robot navigate in home. I spend lot time googling about SLAM and as far as I understand for it consists of three main steps 1. Localize robot using odometry 2. Build map using depth images 3. Navigate in this map, build routes and so on I found some info about localization and odometry(here and here) and i found suitable implementation that works good with KITTI dataset, but when i tried to use it with my cameras and calibration parameters it do not works but only shows one point. I was able to reproduce this by skipping every second frame from dataset. But this topic is most clear for me and i believe that i can solve this problems. The third step is also relatively clear for me - i found a lot of articles about navigation algorithms such as A* and i think that i can implement this. But i could not find any understandable information about map building using stereo map(not lidars or something like it). As far i understand for do it i must store depth data in some format relative robots position estimated by odometry, and it will be a 2D view from above. But my best approach was to iterate over depth image`s rows and get the most common depth value from column. It looks as follows This map is very unstable and i think that i doing something wrong and missed something important. So i have several questions: - Where i can find some easy to understand articles or maybe tutorials about visual odometry, map building and indoor robot navigation in general? - Is there ready for use implementation of odometry and map building made for indoor robots? - How to build map using a stereo vision? - Why that implementation not works with robots (as i think it is because of slow speed) and how to solve this? I am sorry for lot of questions but now i confused and cannot find any more information that i can understand and so i want some explanation from more experienced people. Thanks!
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2019-08-10 07:23:13 -0600	commented answer	How to calculate surface roughness in disparity map? @opalmirror, thank you for supporting and feedback! I solved my problem with SVM when i maked sample code for question a
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2019-08-09 10:33:23 -0600	commented answer	How to implement indoor SLAM in mobile robot with stereo vision? Thank you! There is a lot of information and I will study this. Thank you for video courses because in most cases they a
2019-08-09 09:55:48 -0600	asked a question	How to implement indoor SLAM in mobile robot with stereo vision? How to implement indoor SLAM in mobile robot with stereo vision? Hi there! I am currently developing a autonomous humano
2019-08-09 04:23:36 -0600	received badge	● Editor (source)
2019-08-09 04:23:36 -0600	edited answer	How to calculate surface roughness in disparity map? So. i solved my problem. Firstly i calculated histogram of face disparity map. Then i collected a small dataset with rea
2019-08-09 04:23:19 -0600	answered a question	How to calculate surface roughness in disparity map? So. i solved my problem. Firstly i calculated histogram of face disparity map. Then i collected a small dataset with rea
2019-08-08 01:46:06 -0600	commented question	How to calculate surface roughness in disparity map? @opalmirror, thank you! I tried to find any opencvs or mathematical algorithm, but totally forget about SVM. I already h
2019-08-07 03:30:02 -0600	commented question	How to calculate surface roughness in disparity map? @opalmirror, thank you for useful tip! i could calculate the histograms and histogram of real and fake faces. And they a
2019-08-07 03:28:55 -0600	commented question	How to calculate surface roughness in disparity map? @opalmirror, thank you for useful tip! i could calculate the histograms and histogram of real and fake face are differ c
2019-08-06 11:04:54 -0600	commented question	How to calculate surface roughness in disparity map? @HYPEREGO. thank you for quick reply. I have implemented stereo vision using two cameras and SGBM. I am also implemented
2019-08-06 09:16:40 -0600	asked a question	How to calculate surface roughness in disparity map? How to calculate surface roughness in disparity map? Hello! I am developing small project connected with security. I cre