Harshness in image classification accuracy assessment
نویسندگان
چکیده
منابع مشابه
Approach to Accuracy Assessment tor RS Image Classification Techniques
Several techniques exist for remote sensing (RS) image classification, which includes supervised and unsupervised approaches. Classified maps are the main product of remote sensing image classification. Accuracy assessment of these classified maps is one of the foremost and important tasks of RS image classification technique. Without accuracy assessment the quality of map or output produced wo...
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There are many sources of both conservative and optimistic bias in classification accuracy assessment. In this Letter, we discuss three sources of optimistic bias: use of training data for accuracy assessment, restriction of refer" ence data sampling to homogeneous areas, and sampling of reference data not independent of training data. The magnitude and direction of bias in classification accur...
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The underlying rationale and practical utility of chance-adjusted indices (e.g., kappa, tau) as accuracy measures in remote sensing image classification have been under criticism for a long time despite the fact that they are near universally used. It has been suggested that the degree of chance agreement may be overestimated, or it makes no sense to use kappa or tau for their declared objectiv...
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The production of thematic maps, such as those depicting land cover, using an image classification is one of the most common applications of remote sensing. Considerable research has been directed at the various components of the mapping process, including the assessment of accuracy. This paper briefly reviews the background and methods of classification accuracy assessment that are commonly us...
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ژورنال
عنوان ژورنال: International Journal of Remote Sensing
سال: 2008
ISSN: 0143-1161,1366-5901
DOI: 10.1080/01431160701442120