Detection of Small Size Construction Tools

Introduction #

Released 2022-12-12 ·Kanghyeok Lee, Jungeun Hwang, Chanwoong Jeonet al.

The authors of the Detection of Small Size Construction Tools dataset have explored the application of deep-learning techniques to object detection within the construction industry. Unlike previous studies that predominantly focused on outdoor sites and larger equipment, their emphasis was on enhancing safety by detecting small tools commonly used in indoor construction. Recognizing the need for robust datasets to develop effective object detection models for such tools, they undertook the creation of a comprehensive image database.

The dataset is tailored for training object detection models for small-sized construction tools. It encompasses 12 distinct classes of target tools that are typically utilized in indoor construction scenarios. These tools include bucket, cutter, drill, grinder, hammer, knife, saw, shovel, spanner, tacker, trowel, and wrench. The dataset is composed of a substantial collection of 25,084 images, each paired with corresponding label data to facilitate supervised learning.

The images within the dataset were curated with a keen focus on the diversity of the objects. This diversity was achieved by capturing tools of varying shapes, sizes, and colors. The authors also introduced variations in image characteristics, such as resolution, lighting, occlusion, and background, to improve the model’s robustness. Of the total images in the dataset, 6258 (25%) were directly captured from real construction sites, contributing to the dataset’s authenticity and relevance.

Object annotations for each image were meticulously executed using bounding boxes, which were subsequently saved in text files. The bounding box coordinates were structured as follows: Class, Center X, Center Y, Width, and Height. The “Class” parameter denoted one of the 12 construction tool types, while “Center X” and “Center Y” represented the center coordinates of the bounding box, normalized with respect to the image resolution. “Width” and “Height” indicated the dimensions of the bounding box, also normalized to the image resolution. This comprehensive dataset, meticulously curated and annotated, stands to enable more accurate and effective object detection models for small construction tools in indoor settings.

Note, that the presented version of the dataset has more images than it was claimed in orifinal dataset. This is due to the fact that some images have duplicates because they contain both train and test labels. Moreover, there is an additional split undefined which contains images with no pre-defined splits in the original dataset.

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Research Paper

Summary #

Image Dataset for Object Detection of Small Size Construction Tools is a dataset for an object detection task. It is used in the construction industry.

The dataset consists of 28687 images with 49189 labeled objects belonging to 12 different classes including trowel, drill, grinder, and other: wrench, hammer, saw, tacker, cutter, spanner, bucket, knife, and shovel.

Images in the Detection of Small Size Construction Tools dataset have bounding box annotations. There are 5636 (20% of the total) unlabeled images (i.e. without annotations). There are 3 splits in the dataset: train (14187 images), test (8819 images), and undefined (5681 images). The dataset was released in 2022 by the Korea Expressway Corporation and Inha University, Korea.

Explore #

Detection of Small Size Construction Tools dataset has 28687 images. Click on one of the examples below or open "Explore" tool anytime you need to view dataset images with annotations. This tool has extended visualization capabilities like zoom, translation, objects table, custom filters and more. Hover the mouse over the images to hide or show annotations.

Sample annotation mask from Detection of Small Size Construction Tools

Sample image from Detection of Small Size Construction Tools

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Have a look at 28687 images

View images along with annotations and tags, search and filter by various parameters

Class balance #

There are 12 annotation classes in the dataset. Find the general statistics and balances for every class in the table below. Click any row to preview images that have labels of the selected class. Sort by column to find the most rare or prevalent classes.

Rows 1-10 of 12

Class ㅤ	Images ㅤ	Objects ㅤ	Count on image average	Area on image average
trowel➔ rectangle	4463	8762	1.96	7.97%
drill➔ rectangle	4348	6650	1.53	9%
grinder➔ rectangle	3715	5853	1.58	12.91%
wrench➔ rectangle	3294	5604	1.7	8.34%
hammer➔ rectangle	3256	4954	1.52	10.1%
saw➔ rectangle	2773	4249	1.53	5.62%
tacker➔ rectangle	2332	3545	1.52	5.56%
cutter➔ rectangle	1439	2418	1.68	14.18%
spanner➔ rectangle	1400	1494	1.07	4.88%
bucket➔ rectangle	1208	1952	1.62	9.75%

Co-occurrence matrix #

Co-occurrence matrix is an extremely valuable tool that shows you the images for every pair of classes: how many images have objects of both classes at the same time. If you click any cell, you will see those images. We added the tooltip with an explanation for every cell for your convenience, just hover the mouse over a cell to preview the description.

Images #

Explore every single image in the dataset with respect to the number of annotations of each class it has. Click a row to preview selected image. Sort by any column to find anomalies and edge cases. Use horizontal scroll if the table has many columns for a large number of classes in the dataset.

Object distribution #

Interactive heatmap chart for every class with object distribution shows how many images are in the dataset with a certain number of objects of a specific class. Users can click cell and see the list of all corresponding images.

Class sizes #

The table below gives various size properties of objects for every class. Click a row to see the image with annotations of the selected class. Sort columns to find classes with the smallest or largest objects or understand the size differences between classes.

Rows 1-10 of 12

Class	Object count	Avg area	Max area	Min area	Min height	Min height	Max height	Max height	Avg height	Avg height	Min width	Min width	Max width	Max width
trowel rectangle	8762	4.07%	66.47%	0.05%	36px	1.38%	3624px	99.61%	648px	20.82%	50px	1.08%	4978px	94.58%
drill rectangle	6650	5.89%	76.35%	0.05%	19px	1.76%	3259px	94.98%	653px	21.93%	36px	1.15%	5307px	99.21%
grinder rectangle	5853	8.23%	72.89%	0.05%	24px	1.86%	3597px	99.58%	781px	27.09%	34px	1.62%	4854px	96.16%
wrench rectangle	5604	4.93%	51.42%	0.02%	34px	1.42%	3487px	99.81%	646px	22.91%	33px	1.06%	4014px	92.89%
hammer rectangle	4954	6.66%	65.21%	0.08%	29px	2.69%	3197px	100%	779px	26.52%	39px	1.12%	4794px	92.26%
saw rectangle	4249	3.67%	69.57%	0.02%	22px	1.31%	3564px	99.77%	397px	17.17%	35px	1.6%	4383px	88.47%
tacker rectangle	3545	3.66%	89.8%	0%	11px	0.2%	3430px	100%	468px	16.87%	1px	0.03%	4928px	91.84%
knife rectangle	2647	2%	25.24%	0.07%	49px	1.88%	2574px	83.92%	448px	13.29%	60px	1.32%	2509px	81.55%
cutter rectangle	2418	8.52%	92.9%	0.22%	59px	5.46%	3645px	99.84%	839px	32.05%	66px	3.44%	5215px	95.03%
bucket rectangle	1952	6.23%	71.73%	0.04%	51px	2.73%	3798px	94.2%	761px	25.56%	54px	1.51%	2937px	92.23%

Spatial Heatmap #

The heatmaps below give the spatial distributions of all objects for every class. These visualizations provide insights into the most probable and rare object locations on the image. It helps analyze objects' placements in a dataset.

Objects #

Table contains all 49189 objects. Click a row to preview an image with annotations, and use search or pagination to navigate. Sort columns to find outliers in the dataset.

Rows 1-10 of 49189

Object ID ㅤ	Class ㅤ	Image name click row to open	Image size height x width	Height ㅤ	Height ㅤ	Width ㅤ	Width ㅤ	Area ㅤ
1➔	spanner rectangle	ODt.19438.jpg	2600 x 4624	1488px	57.23%	1444px	31.23%	17.87%
2➔	wrench rectangle	ODt.7937.jpg	3088 x 5488	510px	16.52%	858px	15.63%	2.58%
3➔	wrench rectangle	ODt.7937.jpg	3088 x 5488	771px	24.97%	341px	6.21%	1.55%
4➔	spanner rectangle	ODt.7937.jpg	3088 x 5488	683px	22.12%	455px	8.29%	1.83%
5➔	hammer rectangle	ODt.2349.jpg	3024 x 4032	1134px	37.5%	801px	19.87%	7.45%
6➔	hammer rectangle	ODt.2349.jpg	3024 x 4032	1010px	33.4%	410px	10.17%	3.4%
7➔	drill rectangle	ODt.4876.jpg	5488 x 3088	694px	12.65%	585px	18.94%	2.4%
8➔	saw rectangle	ODt.4876.jpg	5488 x 3088	594px	10.82%	422px	13.67%	1.48%
9➔	tacker rectangle	ODt.17043.jpg	1080 x 1920	245px	22.69%	465px	24.22%	5.49%
10➔	tacker rectangle	ODt.17043.jpg	1080 x 1920	51px	4.72%	87px	4.53%	0.21%

License #

Image Dataset for Object Detection of Small Size Construction Tools is under CC BY 4.0 license.

Source

Citation #

If you make use of the Detection of Small Size Construction Tools data, please cite the following reference:

@misc{kanghyeok_lee_2022_6530106,
    author       = {Kanghyeok Lee and
                    Jungeun Hwang and
                    Chanwoong Jeon and
                    May Mo Eizan and
                    Arnold Jan Bitangjol and
                    Do Hyoung Shin},
    title        = {{Image Dataset for Object Detection of Small Size 
                      Construction Tools}},
    month        = dec,
    year         = 2022,
    note         = {{This work was supported by the National Research 
                      Foundation of Korea (NRF) grant funded by the
                      Korea government (MEST)  (No.NRF -
                      2019R1A2C1088824)}},
    publisher    = {Zenodo},
    version      = {1.0},
    doi          = {10.5281/zenodo.6530106},
    url          = {https://doi.org/10.5281/zenodo.6530106}
}

Source

If you are happy with Dataset Ninja and use provided visualizations and tools in your work, please cite us:

@misc{ visualization-tools-for-small-size-construction-tools-dataset,
  title = { Visualization Tools for Detection of Small Size Construction Tools Dataset },
  type = { Computer Vision Tools },
  author = { Dataset Ninja },
  howpublished = { \url{ https://datasetninja.com/small-size-construction-tools } },
  url = { https://datasetninja.com/small-size-construction-tools },
  journal = { Dataset Ninja },
  publisher = { Dataset Ninja },
  year = { 2024 },
  month = { jul },
  note = { visited on 2024-07-27 },
}

Download #

Dataset Detection of Small Size Construction Tools can be downloaded in Supervisely format:

As an alternative, it can be downloaded with dataset-tools package:

pip install --upgrade dataset-tools

… using following python code:

import dataset_tools as dtools

dtools.download(dataset='Detection of Small Size Construction Tools', dst_dir='~/dataset-ninja/')

Make sure not to overlook the python code example available on the Supervisely Developer Portal. It will give you a clear idea of how to effortlessly work with the downloaded dataset.

The data in original format can be downloaded here:

. . .

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