readOriImg: readOriImg
In CONFESS: Cell OrderiNg by FluorEScence Signal

It reads and processes the original BF image

1	readOriImg(imgName, despeckle, pix, thresh, separator, image.type)

`imgName`	Character string. The file name of the image.
`despeckle`	Logical. If TRUE the BF image is despeckled.
`pix`	Integer. A cutoff specifing the size of the area to search for speckles.
`thresh`	Integer. A cutoff to perform the despeckle function. If pixel signal > median object signal + thresh, the object is a speckle and the median object signal is returned.
`separator`	Character string. Removes the Bright Field ("BF") and channel indicators from the image file names.
`image.type`	Character string. A triplet of IDs to characterize the type of images under study. They refer to the ImageType part of the original image or txt file names.