Stabilization algorithm does not allow to correct cropping down

Hi Marvman

I am using I.F.C. with

- Stabilization factor = 5
- Stabilization tolerance = 3

My expectation is, that I.F.C. reduces the cropping of an edge down to zero if no black pixel is found (bound = 0). Actually it never does.

Please have look at the log. The right bound is always 0, but I.F.C. continues to crop 5 pixel.

2011-04-10 09:20:03.062500 [Debug][(7)]: I.F.C.: grabbed frame: width: 720, height: 576
2011-04-10 09:20:03.062500 [Debug][(7)]: I.F.C.: Bounds: 9 , 10 , 0 , 0
2011-04-10 09:20:03.062500 [Debug][(7)]: I.F.C.: isSingleBlackBar: False
2011-04-10 09:20:03.062500 [Debug][(7)]: I.F.C.: isSingleBlackBar: False
2011-04-10 09:20:03.062500 [Debug][(7)]: I.F.C.: isSideBlackBar: False
2011-04-10 09:20:03.062500 [Debug][(7)]: I.F.C.: isSideBlackBar: False
2011-04-10 09:20:03.062500 [Debug][(7)]: I.F.C.: isDoubleBlackBar: False
2011-04-10 09:20:03.062500 [Debug][(7)]: I.F.C.: isDoubleBlackBar: False
2011-04-10 09:20:03.062500 [Debug][(7)]: I.F.C.: No Pattern found!
2011-04-10 09:20:05.062500 [Debug][(7)]: I.F.C.: Stop Counter: 1, Stop Counter End: 2
2011-04-10 09:20:05.093750 [Debug][(7)]: I.F.C.: grabbed frame: width: 720, height: 576
2011-04-10 09:20:05.093750 [Debug][(7)]: I.F.C.: Bounds: 9 , 10 , 0 , 0
2011-04-10 09:20:05.093750 [Debug][(7)]: I.F.C.: isSingleBlackBar: False
2011-04-10 09:20:05.093750 [Debug][(7)]: I.F.C.: isSingleBlackBar: False
2011-04-10 09:20:05.093750 [Debug][(7)]: I.F.C.: isSideBlackBar: False
2011-04-10 09:20:05.109375 [Debug][(7)]: I.F.C.: isSideBlackBar: False
2011-04-10 09:20:05.109375 [Debug][(7)]: I.F.C.: isDoubleBlackBar: False
2011-04-10 09:20:05.109375 [Debug][(7)]: I.F.C.: isDoubleBlackBar: False
2011-04-10 09:20:05.109375 [Debug][(7)]: I.F.C.: No Pattern found!
2011-04-10 09:20:05.109375 [Debug][(7)]: I.F.C.: 16:9 detected
2011-04-10 09:20:05.109375 [Debug][(7)]: I.F.C.: CropSettings before stabilizing Top: 9, Bottom: 10, Left: 0, Right: 0
2011-04-10 09:20:05.109375 [Debug][(7)]: I.F.C.: Stabilizer: 15
2011-04-10 09:20:05.109375 [Debug][(7)]: I.F.C.: Stabilizer: 15
2011-04-10 09:20:05.109375 [Debug][(7)]: I.F.C.: Stabilizer: 0
2011-04-10 09:20:05.109375 [Debug][(7)]: I.F.C.: Stabilizer: 5
2011-04-10 09:20:05.109375 [Debug][(7)]: I.F.C.: Stabilized CropSettings Top 15, Bottom 15, Left 0, Right 5
2011-04-10 09:20:05.109375 [Debug][(7)]: I.F.C.: Final calced CropSettings Top 15, Bottom 15, Left 0, Right 5
2011-04-10 09:20:05.109375 [Debug][(7)]: I.F.C.: Last faded crop settings: Top: 15, Bottom: 15, Left: 0, Right: 5
2011-04-10 09:20:07.109375 [Debug][(7)]: I.F.C.: Stop Counter: 0, Stop Counter End: 2
2011-04-10 09:20:07.140625 [Debug][(7)]: I.F.C.: grabbed frame: width: 720, height: 576
2011-04-10 09:20:07.140625 [Debug][(7)]: I.F.C.: Bounds: 9 , 10 , 0 , 0
2011-04-10 09:20:07.140625 [Debug][(7)]: I.F.C.: isSingleBlackBar: False
2011-04-10 09:20:07.140625 [Debug][(7)]: I.F.C.: isSingleBlackBar: False
2011-04-10 09:20:07.140625 [Debug][(7)]: I.F.C.: isSideBlackBar: False
2011-04-10 09:20:07.140625 [Debug][(7)]: I.F.C.: isSideBlackBar: False
2011-04-10 09:20:07.140625 [Debug][(7)]: I.F.C.: isDoubleBlackBar: False
2011-04-10 09:20:07.140625 [Debug][(7)]: I.F.C.: isDoubleBlackBar: False
2011-04-10 09:20:07.140625 [Debug][(7)]: I.F.C.: No Pattern found!
2011-04-10 09:20:09.140625 [Debug][(7)]: I.F.C.: Stop Counter: 1, Stop Counter End: 2
2011-04-10 09:20:09.171875 [Debug][(7)]: I.F.C.: grabbed frame: width: 720, height: 576
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: Bounds: 9 , 8 , 0 , 0
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: isSingleBlackBar: False
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: isSingleBlackBar: False
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: isSideBlackBar: False
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: isSideBlackBar: False
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: isDoubleBlackBar: False
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: isDoubleBlackBar: False
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: No Pattern found!
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: no best match found, choose the last bottom cropsetting
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: 16:9 detected
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: CropSettings before stabilizing Top: 9, Bottom: 10, Left: 0, Right: 0
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: Stabilizer: 15
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: Stabilizer: 15
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: Stabilizer: 0
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: Stabilizer: 5
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: Stabilized CropSettings Top 15, Bottom 15, Left 0, Right 5
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: Final calced CropSettings Top 15, Bottom 15, Left 0, Right 5
2011-04-10 09:20:09.187500 [Debug][(7)]: I.F.C.: Last faded crop settings: Top: 15, Bottom: 15, Left: 0, Right: 5


Could you help me to interpret the log?

Additionally I would like to address an additional feature. Let's assume there is a bound of 1 black pixel at the right side and the stabilization factor is 10. I.F.C would then cut off 10 pixel, which I do not like. Wouldn't it be an option to introduce a lower bound or minimal rounding for cropping, like only crop if more than 5 black pixel are found?

Regards

Oliver