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YOLOv9 vs. EfficientDet: A Detailed Comparison

Choosing the right object detection model is crucial for computer vision projects. This page provides a detailed technical comparison between YOLOv9 and EfficientDet, two popular models known for their efficiency and accuracy. We will explore their architectural differences, performance metrics, and ideal applications to help you make an informed decision.

YOLOv9 Overview

YOLOv9 represents the cutting edge in the YOLO series of object detectors, focusing on enhancing accuracy and efficiency. It introduces innovations like Programmable Gradient Information (PGI) and Generalized Efficient Layer Aggregation Network (GELAN) to improve feature extraction and parameter utilization. The architecture is designed to handle information loss, leading to better performance, especially in complex scenes.

YOLOv9 models are particularly strong in scenarios demanding high accuracy and detail, such as intricate object recognition or when dealing with datasets requiring precise localization. The model family offers a range of sizes, from YOLOv9t to YOLOv9e, allowing for scalability based on computational resources and application needs.

Learn more about YOLOv9

EfficientDet Overview

EfficientDet, developed by Google Research, prioritizes efficiency and scalability in object detection. It utilizes a Bi-Directional Feature Pyramid Network (BiFPN) for feature fusion and employs EfficientNet as its backbone network. This design allows EfficientDet to achieve state-of-the-art accuracy with significantly fewer parameters and FLOPS compared to many other object detection models.

EfficientDet models are well-suited for applications where computational resources are limited, such as mobile devices or edge computing scenarios. Its family of models, ranging from EfficientDet-d0 to EfficientDet-d7, provides options for different accuracy and speed trade-offs, making it versatile for various real-time applications.

Find EfficientDet on GitHub

Architectural Differences

  • Backbone Network: YOLOv9 utilizes a custom backbone incorporating GELAN, while EfficientDet leverages EfficientNet backbones. GELAN is designed for efficient computation and parameter usage, whereas EfficientNet is known for its effective scaling capabilities and efficiency.
  • Feature Pyramid Network (FPN): YOLOv9 employs its optimized FPN, while EfficientDet uses BiFPN. BiFPN introduces bidirectional cross-scale connections and weighted feature fusion, which allows for more effective feature aggregation across different scales compared to traditional FPNs.
  • Training Innovations: YOLOv9 introduces PGI to maintain gradient information integrity, addressing information loss during deep network training. EfficientDet focuses on compound scaling to balance network depth, width, and resolution for optimal performance and efficiency.

Performance Metrics and Use Cases

Model size
(pixels)
mAPval
50-95
Speed
CPU ONNX
(ms)
Speed
T4 TensorRT10
(ms)
params
(M)
FLOPs
(B)
YOLOv9t 640 38.3 - 2.3 2.0 7.7
YOLOv9s 640 46.8 - 3.54 7.1 26.4
YOLOv9m 640 51.4 - 6.43 20.0 76.3
YOLOv9c 640 53.0 - 7.16 25.3 102.1
YOLOv9e 640 55.6 - 16.77 57.3 189.0
EfficientDet-d0 640 34.6 10.2 3.92 3.9 2.54
EfficientDet-d1 640 40.5 13.5 7.31 6.6 6.1
EfficientDet-d2 640 43.0 17.7 10.92 8.1 11.0
EfficientDet-d3 640 47.5 28.0 19.59 12.0 24.9
EfficientDet-d4 640 49.7 42.8 33.55 20.7 55.2
EfficientDet-d5 640 51.5 72.5 67.86 33.7 130.0
EfficientDet-d6 640 52.6 92.8 89.29 51.9 226.0
EfficientDet-d7 640 53.7 122.0 128.07 51.9 325.0
  • Accuracy (mAP): YOLOv9 generally achieves higher mAP, particularly the larger models like YOLOv9e, indicating superior accuracy in object detection tasks. EfficientDet also offers competitive accuracy, especially considering its computational efficiency, with EfficientDet-d7 reaching a high mAP.
  • Speed: EfficientDet models, especially smaller variants like EfficientDet-d0 and d1, offer faster inference speeds, making them suitable for real-time applications. YOLOv9 models, while highly accurate, tend to be slower, especially the larger models, which require more computational resources.
  • Model Size and Parameters: EfficientDet models are significantly smaller in terms of parameters and FLOPS compared to YOLOv9 models at similar accuracy levels. This makes EfficientDet more memory-efficient and easier to deploy on resource-constrained devices.

Ideal Use Cases:

Strengths and Weaknesses

YOLOv9 Strengths:

  • High Accuracy: Achieves state-of-the-art accuracy in object detection tasks.
  • Robust Feature Extraction: PGI and GELAN enhance information preservation during the training process.
  • Scalability: Offers a range of model sizes to suit different performance requirements.

YOLOv9 Weaknesses:

  • Slower Inference Speed: Generally slower compared to EfficientDet, especially larger models.
  • Larger Model Size: Higher parameter count and computational cost, making it less suitable for resource-limited devices.

EfficientDet Strengths:

  • High Efficiency: Excellent balance of accuracy and computational cost.
  • Fast Inference Speed: Suitable for real-time applications and edge deployments.
  • Smaller Model Size: Memory-efficient and easier to deploy on mobile and embedded systems.

EfficientDet Weaknesses:

  • Lower Accuracy (Compared to YOLOv9): While highly accurate for its efficiency, it may not match the absolute top accuracy of models like YOLOv9, particularly in complex scenarios.
  • Potential limitations with extremely complex scenes: May be less robust in scenarios requiring very detailed feature extraction compared to larger, more parameter-rich models.

Conclusion

Both YOLOv9 and EfficientDet are powerful object detection models, each with unique strengths. YOLOv9 excels in accuracy, making it ideal for applications where precision is paramount. EfficientDet shines in efficiency and speed, making it perfect for real-time and resource-constrained deployments. Your choice will depend on the specific needs of your project, balancing accuracy requirements with computational constraints.

For users interested in exploring other models within the Ultralytics ecosystem, consider investigating YOLOv8 and YOLOv10 for different performance profiles and capabilities. Also, for segmentation tasks, explore FastSAM and MobileSAM for efficient solutions.


comments: true description: Technical comparison of YOLOv9 and EfficientDet object detection models, including architecture, performance, and use cases. keywords: YOLOv9, EfficientDet, object detection, model comparison, computer vision, Ultralytics


YOLOv9 vs. EfficientDet: A Detailed Comparison

Choosing the right object detection model is crucial for computer vision projects. This page provides a detailed technical comparison between YOLOv9 and EfficientDet, two popular models known for their efficiency and accuracy. We will explore their architectural differences, performance metrics, and ideal applications to help you make an informed decision.

YOLOv9 Overview

YOLOv9 represents the cutting edge in the YOLO series of object detectors, focusing on enhancing accuracy and efficiency. It introduces innovations like Programmable Gradient Information (PGI) and Generalized Efficient Layer Aggregation Network (GELAN) to improve feature extraction and parameter utilization. The architecture is designed to handle information loss, leading to better performance, especially in complex scenes.

YOLOv9 models are particularly strong in scenarios demanding high accuracy and detail, such as intricate object recognition or when dealing with datasets requiring precise localization. The model family offers a range of sizes, from YOLOv9t to YOLOv9e, allowing for scalability based on computational resources and application needs.

Learn more about YOLOv9

EfficientDet Overview

EfficientDet, developed by Google Research, prioritizes efficiency and scalability in object detection. It utilizes a Bi-Directional Feature Pyramid Network (BiFPN) for feature fusion and employs EfficientNet as its backbone network. This design allows EfficientDet to achieve state-of-the-art accuracy with significantly fewer parameters and FLOPS compared to many other object detection models.

EfficientDet models are well-suited for applications where computational resources are limited, such as mobile devices or edge computing scenarios. Its family of models, ranging from EfficientDet-d0 to EfficientDet-d7, provides options for different accuracy and speed trade-offs, making it versatile for various real-time applications.

Find EfficientDet on GitHub

Architectural Differences

  • Backbone Network: YOLOv9 utilizes a custom backbone incorporating GELAN, while EfficientDet leverages EfficientNet backbones. GELAN is designed for efficient computation and parameter usage, whereas EfficientNet is known for its effective scaling capabilities and efficiency.
  • Feature Pyramid Network (FPN): YOLOv9 employs its optimized FPN, while EfficientDet uses BiFPN. BiFPN introduces bidirectional cross-scale connections and weighted feature fusion, which allows for more effective feature aggregation across different scales compared to traditional FPNs.
  • Training Innovations: YOLOv9 introduces PGI to maintain gradient information integrity, addressing information loss during deep network training. EfficientDet focuses on compound scaling to balance network depth, width, and resolution for optimal performance and efficiency.

Performance Metrics and Use Cases

Model size
(pixels)
mAPval
50-95
Speed
CPU ONNX
(ms)
Speed
T4 TensorRT10
(ms)
params
(M)
FLOPs
(B)
YOLOv9t 640 38.3 - 2.3 2.0 7.7
YOLOv9s 640 46.8 - 3.54 7.1 26.4
YOLOv9m 640 51.4 - 6.43 20.0 76.3
YOLOv9c 640 53.0 - 7.16 25.3 102.1
YOLOv9e 640 55.6 - 16.77 57.3 189.0
EfficientDet-d0 640 34.6 10.2 3.92 3.9 2.54
EfficientDet-d1 640 40.5 13.5 7.31 6.6 6.1
EfficientDet-d2 640 43.0 17.7 10.92 8.1 11.0
EfficientDet-d3 640 47.5 28.0 19.59 12.0 24.9
EfficientDet-d4 640 49.7 42.8 33.55 20.7 55.2
EfficientDet-d5 640 51.5 72.5 67.86 33.7 130.0
EfficientDet-d6 640 52.6 92.8 89.29 51.9 226.0
EfficientDet-d7 640 53.7 122.0 128.07 51.9 325.0
  • Accuracy (mAP): YOLOv9 generally achieves higher mAP, particularly the larger models like YOLOv9e, indicating superior accuracy in object detection tasks. EfficientDet also offers competitive accuracy, especially considering its computational efficiency, with EfficientDet-d7 reaching a high mAP.
  • Speed: EfficientDet models, especially smaller variants like EfficientDet-d0 and d1, offer faster inference speeds, making them suitable for real-time applications. YOLOv9 models, while highly accurate, tend to be slower, especially the larger models, which require more computational resources.
  • Model Size and Parameters: EfficientDet models are significantly smaller in terms of parameters and FLOPS compared to YOLOv9 models at similar accuracy levels. This makes EfficientDet more memory-efficient and easier to deploy on resource-constrained devices.

Ideal Use Cases:

Strengths and Weaknesses

YOLOv9 Strengths:

  • High Accuracy: Achieves state-of-the-art accuracy in object detection tasks.
  • Robust Feature Extraction: PGI and GELAN enhance information preservation during the training process.
  • Scalability: Offers a range of model sizes to suit different performance requirements.

YOLOv9 Weaknesses:

  • Slower Inference Speed: Generally slower compared to EfficientDet, especially larger models.
  • Larger Model Size: Higher parameter count and computational cost, making it less suitable for resource-limited devices.

EfficientDet Strengths:

  • High Efficiency: Excellent balance of accuracy and computational cost.
  • Fast Inference Speed: Suitable for real-time applications and edge deployments.
  • Smaller Model Size: Memory-efficient and easier to deploy on mobile and embedded systems.

EfficientDet Weaknesses:

  • Lower Accuracy (Compared to YOLOv9): While highly accurate for its efficiency, it may not match the absolute top accuracy of models like YOLOv9, particularly in complex scenarios.
  • Potential limitations with extremely complex scenes: May be less robust in scenarios requiring very detailed feature extraction compared to larger, more parameter-rich models.

Conclusion

Both YOLOv9 and EfficientDet are powerful object detection models, each with unique strengths. YOLOv9 excels in accuracy, making it ideal for applications where precision is paramount. EfficientDet shines in efficiency and speed, making it perfect for real-time and resource-constrained deployments. Your choice will depend on the specific needs of your project, balancing accuracy requirements with computational constraints.

For users interested in exploring other models within the Ultralytics ecosystem, consider investigating YOLOv8 and YOLOv10 for different performance profiles and capabilities. Also, for segmentation tasks, explore FastSAM and MobileSAM for efficient solutions.

📅 Created 1 year ago ✏️ Updated 1 month ago

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