NSC89-2623-D-110-001 蔣依吾 中山大學資訊工程系 紅外線點目標的檢知法則 Automatic detection of small targets in infrared image sequences containing evolving cloud clutter NSC89-2623-D-110-001.

Presentation on theme: "NSC89-2623-D-110-001 蔣依吾 中山大學資訊工程系 紅外線點目標的檢知法則 Automatic detection of small targets in infrared image sequences containing evolving cloud clutter NSC89-2623-D-110-001."— Presentation transcript:

1 NSC89-2623-D-110-001 蔣依吾 中山大學資訊工程系
紅外線點目標的檢知法則 Automatic detection of small targets in infrared image sequences containing evolving cloud clutter NSC D 蔣依吾 中山大學資訊工程系

2 Project description Goal: Automatic, real-time detection of small targets in sequences of thermal infrared images containing evolving cloud clutter PFA (probability of false acceptance) PFR (probability of false rejection) 第一期 (88 第一期 ( ~ ) 尋求不必進行多頻譜紅外線信號The Likelihood Ratio Test及Pre-Whitening處理時不可避免之反矩陣運算及頻域轉換，以計算量較少方式，快速資料融合及做出檢知推論。 第二期 ( ~ ) 進行多頻譜信號與位元平面間之對應及收集多頻譜紅外線測試信號。

3 Original image Image with true targets

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7 a single frame of processed output data
a single frame of typical input data

8 Hypotheses: Targets hotter than surrounding -> positive contrast Restricted size and aspect ratio -> temporal and spatial behavior of the background noise, target and clutter on a single pixel basis. Parameters of acquisition: Targets: moving , sensors: either moving or stationary Sensor to scene distance: unknown Speed and altitude of sensor movement: unknown Looking angle of sensor: unknown Ranges of possible target size: wide (2 ~ 200 pixels)

9 Method

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12 with and

13 Conventional processing chain
Advanced processing chain

14 Multi-sensor fusion Advantages
Availability of complementary information Improved performance to countermeasures Improved performance in adverse conditions -> measurement level fusion: done in raw data feature level fusion: some features extracted from raw data are fused decision level fusion: decisions are drawn from the data of each separate data, then combined to reach a global decision

15 Measurement level fusion

16 Original image Bit plane 7

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