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Granados et al., 2010 - Google Patents

Optimal HDR reconstruction with linear digital cameras

Granados et al., 2010

View PDF
Document ID
6052719330743680328
Author
Granados M
Ajdin B
Wand M
Theobalt C
Seidel H
Lensch H
Publication year
Publication venue
2010 IEEE computer society conference on computer vision and pattern recognition

External Links

Snippet

Given a multi-exposure sequence of a scene, our aim is to recover the absolute irradiance falling onto a linear camera sensor. The established approach is to perform a weighted average of the scaled input exposures. However, there is no clear consensus on the …
Continue reading at citeseerx.ist.psu.edu (PDF) (other versions)

Classifications

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    • H04N5/222—Studio circuitry; Studio devices; Studio equipment; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/225—Television cameras; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/235—Circuitry or methods for compensating for variation in the brightness of the object, e.g. based on electric image signals provided by an electronic image sensor
    • H04N5/243—Circuitry or methods for compensating for variation in the brightness of the object, e.g. based on electric image signals provided by an electronic image sensor by influencing the picture signal, e.g. signal amplitude gain control
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    • H04N5/225—Television cameras; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/235—Circuitry or methods for compensating for variation in the brightness of the object, e.g. based on electric image signals provided by an electronic image sensor
    • H04N5/2355—Circuitry or methods for compensating for variation in the brightness of the object, e.g. based on electric image signals provided by an electronic image sensor by increasing the dynamic range of the final image compared to the dynamic range of the electronic image sensor, e.g. by adding correct exposed portions of short and long exposed images
    • H—ELECTRICITY
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    • H04N5/30—Transforming light or analogous information into electric information
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    • H04N5/361—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to dark current
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    • H04N5/335—Transforming light or analogous information into electric information using solid-state image sensors [SSIS]
    • H04N5/351—Control of the SSIS depending on the scene, e.g. brightness or motion in the scene
    • H04N5/355—Control of the dynamic range
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    • H—ELECTRICITY
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    • H04N5/225—Television cameras; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
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    • H04N5/217—Circuitry for suppressing or minimising disturbance, e.g. moiré, halo, even if the automatic gain control is involved in picture signal generation in cameras comprising an electronic image sensor, e.g. digital cameras, TV cameras, video cameras, camcorders, webcams, to be embedded in other devices, e.g. in mobile phones, computers or vehicles
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