Aleksei Zhigalov

Mr. Aleksei Zhigalov


Research Focus & Metrics

Academic Career Length

2Years (2025-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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28 October 2025 in Preprints.org
Verified
Preprint
Open access
PDF file
OIOleg Ivashchuk
Oleg Ivashchuk
ZKZhanat Kenzhebayeva
Zhanat Kenzhebayeva
AZAleksei Zhigalov
Aleksei Zhigalov
MAMoldir Allaniyazova
Moldir Allaniyazova
GGulnara Kaziyeva
Gulnara Kaziyeva
OIOlga Alexandrovna Ivashchuk
Olga Alexandrovna Ivashchuk
The present study provides a systematic benchmarking of nine state-of-the-art object detection models adapted to a specialized animal dataset. The main objective was to evaluate their performance in terms of accuracy and inference speed in the context of real-time and commercial applications within the agro-industrial sector. The method-ology involved aggregating and thoroughly cleaning several cattle image datasets, fol-lowed by fine-tuning models with diverse architectures — two-stage, one-stage, and transformer-based. Performance evaluation was conducted on a unified hardware platform equipped with an NVIDIA RTX 4090 GPU with 24 GB of VRAM, which is critical for the objec-tive assessment of speed-related metrics. Key results show that the D-FINE and Co-DETR models demonstrated the highest ac-curacy (AP@[IoU=0.50:0.95] of 0.872 and 0.851, respectively), while RTMDet and YOLOv11 proved to be the fastest (15.81 ms/image and 19.14 ms/image in reproducible mode). A general trend was observed toward significant improvement in average pre-cision (AP) metrics on the specialized dataset compared to their known results on gen-eral-purpose datasets such as COCO, while relative inference speed rankings remained largely consistent.

2 December 2025 in Algorithms
Verified
Journal Article
Open access
PDF file
OIOleg Ivashchuk
Oleg Ivashchuk
ZKZhanat Kenzhebayeva
Zhanat Kenzhebayeva
AZAleksei Zhigalov
Aleksei Zhigalov
MAMoldir Allaniyazova
Moldir Allaniyazova
GGulnara Kaziyeva
Gulnara Kaziyeva
OIOlga Alexandrovna Ivashchuk
Olga Alexandrovna Ivashchuk
This study benchmarks nine state-of-the-art object detection models on a specialized cattle dataset to assess accuracy and inference speed for real-time agricultural applications. Using a unified protocol without model-specific augmentations, and evaluating all detectors on identical RTX 4090 hardware, we provide a fair architectural comparison of two-stage, one-stage, and transformer-based models. D_FINE_L and Co_DETR_R_50 achieved the highest accuracy (AP@[0.50:0.95] = 0.872 and 0.851), while RTMDet and YOLOv11_L were the fastest (15.81 and 19.14 ms/image). All models showed substantial accuracy gains on the domain dataset compared to COCO, while maintaining consistent relative speed rankings.

18 February 2026 in Technologies
Verified
Journal Article
Open access
PDF file
Oleg IvashchukOleg Ivashchuk
Oleg Ivashchuk
ZKZhanat Kenzhebayeva
Zhanat Kenzhebayeva
AZAleksei Zhigalov
Aleksei Zhigalov
MAMoldir Allaniyazova
Moldir Allaniyazova
GGulnara Kaziyeva
Gulnara Kaziyeva
OIOlga Alexandrovna Ivashchuk
Olga Alexandrovna Ivashchuk
This paper presents the design of a hardware–software system for non-invasive automated monitoring of feeding behavior in livestock with biometric identification of individual animals. Neural network models for animal identification from images and individual recognition have been developed and trained. A solution is proposed to address the challenge of acquiring a sufficient number of personalized animal images for training the identification neural network. A transfer learning approach is introduced for pig identification, where the network is first trained on a large-scale dataset of more than three million human face images obtained from open sources and subsequently fine-tuned by training the upper layers on a significantly smaller dataset consisting of 5610 pig face images. Experimental results demonstrated the high effectiveness of the system: the Top-1 identification accuracy reached 95.1%, while the ROC AUC in open-set recognition tasks achieved 0.95. The processing time per frame on an NVIDIA RTX 4090 GPU was 1.4 ms (724 FPS).