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There are many limitations applying object detection algorithm on various environments. Especially detecting small objects is still challenging because they have lowresolution and limited information. We propose an object detection method using context for improving accuracy of detecting small objects. The proposed method uses additional features from different layers as context by concatenating multi-scale features. We also propose object detection with attention mechanism which can focus on the object in image, and it can include contextual information from target layer. Experimental results shows that proposed method also has higher accuracy than conventional SSD on detecting small objects. Also, for 300×300 input, we achieved 78.1% Mean Average Precision (mAP) on the PAS-CAL VOC2007 test set.

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