Visible-Light Image Correction Through Multi-Exposure Infrared Synthesis

The patent applies preliminary action by capturing multiple infrared light images with different exposure conditions before synthesis. By pre-capturing images with varying exposures (including under-exposed images that avoid saturation), the system prepares multiple candidates that can be synthesized to achieve both brightness matching and noise reduction. This preliminary capture of diverse exposure data enables subsequent synthesis to select optimal information without saturation or excessive noise.

The patent changes exposure parameters when capturing infrared light images. Multiple infrared images are captured with different exposure conditions (different exposure times or gain settings). This parameter variation allows the synthesis process to combine images that avoid both under-exposure noise and over-exposure saturation, achieving optimal brightness matching while maintaining information accuracy.

The patent merges multiple infrared light images with different exposure conditions through synthesis processing. By combining multiple images, the system achieves better noise reduction and visibility enhancement compared to using a single image. The synthesis process integrates information from multiple exposure conditions to produce a high-quality synthetic infrared image for correction.

The patent uses partial action by selectively using only the necessary portions of multiple captured images for synthesis. Rather than processing all captured images equally, the synthesis unit selects and combines appropriate regions or images based on their quality and exposure characteristics, achieving optimal results without excessive processing overhead.

The patent applies universality by using a single exposure determination process that serves multiple purposes. The exposure determined for visible light imaging is also used for capturing infrared light images, making the exposure setting universal for both imaging types. Combined with subsequent synthesis of multiple infrared images, this universal exposure approach ensures both visible light image quality and infrared information preservation.

The patent uses copying by creating multiple copies of infrared light images with the same exposure settings determined for visible light. These copied infrared images are then synthesized to recover information that may be lost in individual copies. This copying approach allows the system to maintain the exposure optimization for visible light while recovering infrared information through synthesis of multiple copies.