Reconstituting an image from wavelet coefficients

The following settings are used only during reconstitution (i.e., so-called ``reverse'' wavelet transform).

1. Index range to use - can be all, none, or a range such as 0 to 256, 0 - 256, or 0 256.The range can be from 0 to the size in pixels of each dimension in the image. Values with indices outside the specified range in each dimension are set to 0. If the default number of levels is used, indices start at 0-3 for the low-detail wavelets, and each successive detail level encompasses the next power of 2 (e.g., 4-7, 8-15, etc).
2. Value range to use - can be all, none, or a range such as -100 to 100, etc. Values outside the specified range are set to 0. The value of each wavelet coefficient is displayed in the left information window as the mouse passes over it.
3. Value range to ignore - can be all, none, or a range such as -100 to 100, etc. Values within the specified range are set to 0. The three conditions (index range, value range, and ignore range) are ANDed together.
4. Gray value offset - If checked, the specified value will be added to the resulting pixel value, and the image contrast will be rescaled appropriately. This is useful if the selected wavelet produces negative values, as often happens if the low-detail coefficients are changed. Reconstituted pixel values are always coerced into the range of [0, 2 $^{bits/pixel}$]; thus, a negative value would produce a large region of black unless an offset was given.