Changes between Version 8 and Version 9 of staticsky.20120706_excess_detections
- Timestamp:
- Feb 28, 2013, 3:55:51 PM (13 years ago)
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staticsky.20120706_excess_detections
v8 v9 4 4 5 5 == 2013-02-27 == 6 7 This plot shows the measured image standard deviation (red) and the measured average variance image value (green) for each row in a 300-pixel wide vertical stripe on the stack image used as an example below. The following image shows the location of the stripe on the data and variance images. From this plot, we can see that the reason that there are so many excess detections across large regions of this image is that the variance contained in the variance image is a significant underestimate of the true image variance. Only in the areas where the image variance dips down to the excess detections drop as expected. 8 9 The reason for the discrepancy between the image and variance is not currently known. 6 10 7 11 [[Image(variance_plot.png)]]
