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Cluster Contrast for Unsupervised Person Re-Identification
Asian Conference on Computer Vision, 2021State-of-the-art unsupervised re-ID methods train the neural networks using a memory-based non-parametric softmax loss. Instance feature vectors stored in memory are assigned pseudo-labels by clustering and updated at instance level. However, the varying
Zuozhuo Dai +4 more
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Contrast–contrast asynchronies
Journal of the Optical Society of America A, 2014We introduce the "contrast-contrast asynchrony," a dynamic stimulus configuration that combines elements of the Shapiro contrast asynchrony with elements of the Chubb contrast-contrast illusion. In the contrast-contrast asynchrony, static textured fields surround two textured fields; one surround has high-contrast texture, and the other has low ...
Alex, Rose-Henig, Arthur G, Shapiro
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Contrast contrast determines perceived contrast
Optical Society of America Annual Meeting, 1991A testpatch of visual texture has greater apparent contrast when it is surrounded by a uniform mean gray field than by a background of similar, high contrast texture. Temporally modulating the contrast of surrounding texture induces a substantial antiphase modulation of testpatch apparent contrast.
Charles Chubb +2 more
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Current Problems in Cardiology, 2007
Myocardial contrast echocardiography (MCE) is a noninvasive imaging technique that relies on the ultrasound detection of microbubble contrast agents. These agents are confined to the intravascular space thereby producing signal enhancement from the blood pool.
Beat A, Kaufmann +2 more
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Myocardial contrast echocardiography (MCE) is a noninvasive imaging technique that relies on the ultrasound detection of microbubble contrast agents. These agents are confined to the intravascular space thereby producing signal enhancement from the blood pool.
Beat A, Kaufmann +2 more
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Photoacoustic Imaging: Contrast Agents and Their Biomedical Applications
Advances in Materials, 2018Photoacoustic (PA) imaging as a fast‐developing imaging technique has great potential in biomedical and clinical applications. It is a noninvasive imaging modality that depends on the light‐absorption coefficient of the imaged tissue and the injected PA ...
Qinrui Fu +4 more
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Clinical Radiology, 1977
Contrast nasopharyngography was performed in 25 cases of nasopharyngeal lesions, 15 of which were carcinoma, six malignant lymphoma, and four benign lesions including neurofibroma, haemangioma, angiofibroma and tuberculosis. Nasopharyngography was also performed in 22 cases with extranasopharyngeal lesions, including nine of head and neck malignant ...
Shimpei Tada +5 more
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Contrast nasopharyngography was performed in 25 cases of nasopharyngeal lesions, 15 of which were carcinoma, six malignant lymphoma, and four benign lesions including neurofibroma, haemangioma, angiofibroma and tuberculosis. Nasopharyngography was also performed in 22 cases with extranasopharyngeal lesions, including nine of head and neck malignant ...
Shimpei Tada +5 more
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The Contrast Contrast Illusion
2017Abstract To most observers, a patch of medium-contrast texture viewed against a background of high-contrast texture appears lower in contrast than an identical patch viewed against a homogeneous, mean gray background. This is the contrast contrast illusion.
Charles Chubb +2 more
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