Index: trunk/ppImage/src/ppImageSetThreads.c
===================================================================
--- trunk/ppImage/src/ppImageSetThreads.c	(revision 18823)
+++ trunk/ppImage/src/ppImageSetThreads.c	(revision 41894)
@@ -15,12 +15,35 @@
 }
 
-bool ppImageSetThreads () {
+bool ppImageThread_ppImageDetrendPatternApplyCell (psThreadJob *job) {
 
-    psThreadTask *task = NULL;
+    pmConfig *config        = job->args->data[0];
+    pmFPA *fpa              = job->args->data[1];
+    pmChip *chip            = job->args->data[2];
+    pmCell *cell            = job->args->data[3];
+    pmFPAview *view         = job->args->data[4];
+    ppImageOptions *options = job->args->data[5];
 
-    task = psThreadTaskAlloc ("PPIMAGE_DETREND_READOUT", 3);
-    task->function = &ppImageThread_ppImageDetrendReadout;
-    psThreadTaskAdd (task);
+    bool status = ppImageDetrendPatternApplyCell (config, fpa, chip, cell, view, options);
+    return status;
+}
 
+bool ppImageSetThreads (void) {
+
+# if (0)
+    // *** Detrend Readout (now unused : threading is done at the readout level in pmDetrend)
+    {
+	psThreadTask *task = psThreadTaskAlloc ("PPIMAGE_DETREND_READOUT", 3);
+	task->function = &ppImageThread_ppImageDetrendReadout;
+	psThreadTaskAdd (task);
+    }
+# endif
+
+    // *** Detrend Pattern Row
+    {
+	psThreadTask *task = psThreadTaskAlloc("PPIMAGE_PATTERN_ROW_CELL", 6);
+	task->function = &ppImageThread_ppImageDetrendPatternApplyCell;
+	psThreadTaskAdd(task);
+	psFree(task);
+    }
     return true;
 }