object-detection | detect objects on images using server | Computer Vision library

 by   lucleray JavaScript Version: Current License: No License

kandi X-RAY | object-detection Summary

kandi X-RAY | object-detection Summary

object-detection is a JavaScript library typically used in Artificial Intelligence, Computer Vision, Deep Learning, Tensorflow applications. object-detection has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

an api to detect objects on images using server-side tensorflow-js
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              object-detection has a low active ecosystem.
              It has 68 star(s) with 12 fork(s). There are 1 watchers for this library.
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              It had no major release in the last 6 months.
              There are 1 open issues and 0 have been closed. There are 5 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of object-detection is current.

            kandi-Quality Quality

              object-detection has no bugs reported.

            kandi-Security Security

              object-detection has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              object-detection does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
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              Without a license, all rights are reserved, and you cannot use the library in your applications.

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              object-detection releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

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            object-detection Examples and Code Snippets

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            Community Discussions

            QUESTION

            Apache Beam SIGKILL
            Asked 2021-Jun-15 at 13:51

            The Question

            How do I best execute memory-intensive pipelines in Apache Beam?

            Background

            I've written a pipeline that takes the Naemura Bird dataset and converts the images and annotations to TF Records with TF Examples of the required format for the TF object detection API.

            I tested the pipeline using DirectRunner with a small subset of images (4 or 5) and it worked fine.

            The Problem

            When running the pipeline with a bigger data set (day 1 of 3, ~21GB) it crashes after a while with a non-descriptive SIGKILL. I do see a memory peak before the crash and assume that the process is killed because of a too high memory load.

            I ran the pipeline through strace. These are the last lines in the trace:

            ...

            ANSWER

            Answered 2021-Jun-15 at 13:51

            Multiple things could cause this behaviour, because the pipeline runs fine with less Data, analysing what has changed could lead us to a resolution.

            Option 1 : clean your input data

            The third line of the logs you provide might indicate that you're processing unclean data in your bigger pipeline mmap(NULL, could mean that | "Get Content" >> beam.Map(lambda x: x.read_utf8()) is trying to read a null value.

            Is there an empty file somewhere ? Are your files utf8 encoded ?

            Option 2 : use smaller files as input

            I'm guessing using the fileio.ReadMatches() will try to load into memory the whole file, if your file is bigger than your memory, this could lead to errors. Can you split your data into smaller files ?

            Option 3 : use a bigger infrastructure

            If files are too big for your current machine with a DirectRunner you could try to use an on-demand infrastructure using another runner on the Cloud such as DataflowRunner

            Source https://stackoverflow.com/questions/67684186

            QUESTION

            Segmentation fault while "from object_detection import model_lib_v2"
            Asked 2021-May-28 at 14:40

            While running models/research/object_detection/model_main_tf2.py from tensorflow/models (or just python -c "from object_detection import model_lib_v2") I get:

            ...

            ANSWER

            Answered 2021-May-28 at 14:40

            I managed to resolve by downgrading Pillow to 7.0.0, downgrading numpy to 1.19.5 (which is the latest version still compatible with tensorflow 2.5.0 at the moment) and downgrading pycocotools to 2.0.0.

            Source https://stackoverflow.com/questions/67669509

            QUESTION

            Why are images not being acquired by the analyze() method?
            Asked 2021-May-10 at 15:44

            Summary/TL;DR: ML Object Detection application is unable to detect objects because images aren't being acquired by analyze() method.

            BACKGROUND

            I'm currently working on a mobile application using CameraX and Google ML Kit written in Java. The purpose of the application is to detect objects with a real time camera preview. I implemented ML Kit using this guide aptly titled "Detect and track objects with ML Kit on Android" (base model option) to detect objects in successive frames within the application.

            However, upon running the application, it launches on my device and the camera preview continues to work but the application does not carry out its intended effect of actually detecting objects and displaying it on my screen. To attempt to resolve this, I had found this StackOverflow answer that very closely resembles this issue. To my dismay, the user had built their application using a custom model (tflite). This differs from mine as I am using the base model. According to my research, this uses the ML Kit's on-device's object detection. The code being applied is restricted to what is present within the aforementioned documentation. Since my IDE (Android Studio) does not display any errors within the syntax, I am unsure as to why any object detection does not appear to be present on my application. Displayed below is the necessary code that had been used:

            CODE ...

            ANSWER

            Answered 2021-Apr-02 at 18:33

            As mentioned in the other StackOverflow question you linked, you need to bind the analysis use case to make it work.

            One tip to help debug this is that you can add some Log.d(..) in onSuccess to check the size of the returned object list and in onFailure to print out the exception. Then when running, you could use adb logcat or the AS log tab to check the info to make sure things are running.

            Another improvement you can make is that, you don't need to create a new object detector each frame. You can create one out side the analyze method and reuse it.

            Source https://stackoverflow.com/questions/66892974

            QUESTION

            Tensorflow 2 Object Detection API: Numpy Version Errors
            Asked 2021-Apr-28 at 14:25

            I followed the "Training Custom Object Detector" tutorial (https://tensorflow-object-detection-api-tutorial.readthedocs.io/en/latest/training.html)

            When running the script to continue training a pre-trained model:

            python model_main_tf2.py --model_dir=models/my_ssd_resnet50_v1_fpn --pipeline_config_path=models/my_ssd_resnet50_v1_fpn/pipeline.config

            (found here: https://github.com/tensorflow/models/blob/master/research/object_detection/model_main_tf2.py)

            Using different numpy versions, I get the following errors.

            Scenario #1:

            • tensorflow: 2.2.0
            • numpy: 1.20.0-1

            NotImplementedError: Cannot convert a symbolic Tensor (cond_2/strided_slice:0) to a numpy array. This error may indicate that you're trying to pass a Tensor to a NumPy call, which is not supported

            I looked online and it suggests to downgrade the numpy version < 1.20.0 (NotImplementedError: Cannot convert a symbolic Tensor (2nd_target:0) to a numpy array). Note, the version numpy version must be >= 1.19.2 for tensorflow 2.2.0.

            Scenario #2:

            • tensorflow: 2.2.0
            • numpy: 1.19.2-5

            ValueError: numpy.ndarray size changed, may indicate binary incompatibility. Expected 88 from C header, got 80 from PyObject

            However, the online recommendation is to upgrade numpy to >= 1.20.0. (ValueError: numpy.ndarray size changed, may indicate binary incompatibility. Expected 88 from C header, got 80 from PyObject). There is a github issue related to this: https://github.com/tensorflow/models/issues/9749.

            I'm not sure what version to use to get the code running.

            Appendix: Scenario #1 Error Code (numpy: 1.20.0-1)

            ...

            ANSWER

            Answered 2021-Feb-26 at 09:25

            I had the same error. Are you on windows? If so try (that worked for me):
            pip uninstall pycocotools
            pip install pycocotools-windows

            Source https://stackoverflow.com/questions/66373169

            QUESTION

            Tensorflow installation on Windows: DLL load failed while importing _pywrap_tensorflow_internal
            Asked 2021-Apr-26 at 06:10

            I ran through the TensorFlow object detection installation on Windows.

            https://medium.com/riow/tensorflow-object-detection-on-windows-ad10bfde217c

            After successfully installing TensorFlow object detection,

            I ran following command to test, and receiving error below. How can this be fixed?

            ...

            ANSWER

            Answered 2021-Apr-26 at 06:10
            tldr;

            You need to install the C++ redistributable mentioned on the install page before installing TensorFlow so that TensorFlow can use it to generate code at install time.

            Details:

            I'm not an expert but it sounds like this was key:

            The pywrap_tensorflow_internal.py module you are missing appears to me to be a SWIG-generated python interface to a C++ library, or something of that nature. My guess is, that file gets generated when you install TensorFlow (it reminds me of how some Ruby gems have to compile C++ when you install them, for whatever that's worth). Since you don't have that generated file, my guess is that the C++ package mentioned on the TensorFlow install page is needed for that code generation, so you need to have the C++ package installed before installing TensorFlow.

            Totally a guess, but perhaps you installed the C++ package after TF. In that case, you should be able to uninstall TF, install the C++ package, and then install TF again.

            Maybe a lingering question is if there were any indicative error messages on installing TF about the missing C++ package and if not, maybe there should be.

            Source https://stackoverflow.com/questions/67259900

            QUESTION

            Install TensorFlow Object Detection on Windows Problems
            Asked 2021-Apr-26 at 01:23

            I am trying to install Tensor Flow Object Detection on Windows 10.

            Resource: https://towardsdatascience.com/how-to-install-tensorflow-2-object-detection-api-on-windows-2eef9b7ae869

            After running these steps, we are receiving the errors below. It is stalling on pyarrow. How can this be fixed?

            ...

            ANSWER

            Answered 2021-Apr-26 at 00:11

            I'm not exactly sure about that error, but for Tensorflow in general, if you go to this page, you'll see that, as of this writing, the only supported version of python are 3.6 - 3.8. It sounds like for tensorflow/models, you might do well to use 3.7. You will want to make sure you have a compatible version of pip as well.

            Source https://stackoverflow.com/questions/67259332

            QUESTION

            (Tensorflow) TypeError: create_estimator_and_inputs() missing 1 required positional argument: 'hparams'
            Asked 2021-Apr-16 at 09:25

            I try to train a model object detection and I follow this tutorial: https://tensorflow-object-detection-api-tutorial.readthedocs.io/en/tensorflow-1.14/training.html

            But at the end I execute the command in the cmd : python model_main.py --alsologtostderr --model_dir=training/ --pipeline_config_path=training/ssd_inception_v2_coco.config

            and it return the following lines:

            ...

            ANSWER

            Answered 2021-Apr-16 at 09:25

            Make sure that you run these commands before training/validation for installing all the necessary packages/dependencies and testing the installation

            Source https://stackoverflow.com/questions/67111898

            QUESTION

            How can I download a pre-trained model from Tensorflow's Object Detection Model Zoo?
            Asked 2021-Apr-13 at 16:14

            I am attempting to train an object detection model using Tensorflow's Object Detection API 2 and Tensorflow 2.3.0. I have largely been using this article as a resource in preparing the data and training the model.

            Most articles which use the Object Detection API download a pre-trained model from the Tensorflow model zoo prior to fine-tuning.

            The Tensorflow Model Zoo is a set of links on a Github page set up by the Object Detection team. When I click one such link (using Google Chrome), a new tab opens briefly as if a download is starting, then immediately closes and a download does not occur. Hyperlinks to other models I have found in articles also have not worked.

            To anyone who has worked with fine-tuning using the Object Detection API: What method did you use to download a pre-trained model? Did the model zoo links work? If not, what resource did you use instead?

            Any help is much appreciated.

            ...

            ANSWER

            Answered 2021-Apr-13 at 16:14

            I solved this problem on my own, so if anyone else is having a similar issue: try a different browser. The model zoo downloads were not working for me in Google Chrome. However, when I tried the download on Microsoft Edge, it worked immediately and I was able to proceed.

            Source https://stackoverflow.com/questions/66980312

            QUESTION

            Which one is which ? (True Positive, True Negative, False Positive, False Negative)
            Asked 2021-Apr-12 at 10:56

            I am running confusion matrix on my own custom model using Tensorflow Object Detection API. I am using Faster R-CNN Inception v2 pets. I get this output:

            ...

            ANSWER

            Answered 2021-Apr-12 at 10:49

            Please check below image.

            More information about confusion matrix can be found here. https://www.analyticsvidhya.com/blog/2020/04/confusion-matrix-machine-learning/

            Source https://stackoverflow.com/questions/67056887

            QUESTION

            How to apply custom object detector on pre-captured video?
            Asked 2021-Apr-01 at 16:23

            Based on what is written on the TensorFlow web page about object-detection API, I have trained a custom model, and its checkpoint is obtained successfully, now I am going to apply this trained model on a pre-captured video(not webcam frames). Now, I would like to know how can I do this? is there any pre-written code that can help me in this way? thanks for your comments. best wishes to you.

            ...

            ANSWER

            Answered 2021-Apr-01 at 16:23

            You can use most of the code from the docs here.

            The only minor change you need to make here is, instead of cap = cv2.VideoCapture(0), use cap = cv2.VideoCapture(path_to_video_file) and it should work

            Source https://stackoverflow.com/questions/66904730

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