MView 2.1. New Features: Frame and line shifting

Manual shifting of images.

One issue with functional imaging is motion correction. This procedure can be handled automatically in MView with the Motion Correction algorithm. However, on occasion, one needs to adjust " by hand" the position of individual frames relative to other frames by shifting pixels in the X or the Y position. MView 2.1 allows users to perform this correction with the Ctrl+1, 2, 3 or 4 keystroke combination to move frames pixel by pixel. The modified frames can be reviewed then saved into a new data file. The modified frames can be reviewed then saved into a new data file.

Scan line aligment.

Another related feature of MView 2.1. is the possibility to cancel or reduce scanning artifacts due to misalignment of scan lines, often seen as “hairs” on images after acquisition. Pixel shifts, which are used to move odd lines horizontally with respect to even scan lines, can be fractional (e.g., ‘4.3’). The integer value of the shift (i.e., 4) moves odd lines by four pixels, while the fractional value of the shift is used to interpolate the values of consecutive pixels in odd lines to provide a sub-pixel positional adjustment. Contrary to manual shifting, scan line alignment applies the same shift to all frames in a file. The modified frames can be reviewed then saved into a new data file.