generating range-balanced PNG files for preview videos

src/main/java/JP46_Reader_camera0.java

@@ -1192,7 +1192,7 @@ public class JP46_Reader_camera0 extends PlugInFrame implements ActionListener {
 		try {
 			url = new URL(cameraurl);
 		} catch (MalformedURLException e) {
-			System.out.println("Bad URL: " + cameraurl);
+			System.out.println("Bad URL5: " + cameraurl);
 			return null;
 		}
 

src/main/java/com/elphel/imagej/calibration/Aberration_Calibration.java

@@ -1072,6 +1072,9 @@ if (MORE_BUTTONS) {
 		addButton("Illustrations Configure",    panelIllustrations,color_configure);
 		addButton("Remove bad grids",           panelIllustrations,color_stop);
 		addButton("Illustrations",              panelIllustrations,color_bundle);
+		addButton("Illustrate Kernels",         panelIllustrations,color_process);
+		addButton("Illustrate Footage",         panelIllustrations,color_process);
+		
 		add(panelIllustrations);
 		
 		
@@ -8867,6 +8870,10 @@ if (MORE_BUTTONS) {
 /* ======================================================================== */
 		if       (label.equals("Select Channels")) {
 			DEBUG_LEVEL=MASTER_DEBUG_LEVEL;
+			if (LENS_DISTORTIONS == null) {
+				LENS_DISTORTIONS=new Distortions(LENS_DISTORTION_PARAMETERS,PATTERN_PARAMETERS,REFINE_PARAMETERS,this.SYNC_COMMAND.stopRequested);
+			}
+
 			ABERRATIONS_PARAMETERS.selectChannelsToProcess("Select channels to process",LENS_DISTORTIONS); //LENS_DISTORTIONS==null OK
 			return;
 		}
@@ -9432,6 +9439,7 @@ if (MORE_BUTTONS) {
 		
 		if (CALIBRATION_ILLUSTRATION == null) {
 			CALIBRATION_ILLUSTRATION = new CalibrationIllustration(
+					LWIR_PARAMETERS,             //	LwirReaderParameters           lwirReaderParameters,
 					CALIBRATION_ILLUSTRATION_PARAMETERS, // CalibrationIllustrationParameters illustrationParameters,			
 					EYESIS_ABERRATIONS,          // EyesisAberrations eyesisAberrations,
 					LENS_DISTORTIONS,            // Distortions       distortions,
@@ -9442,6 +9450,114 @@ if (MORE_BUTTONS) {
 		return;
 	}
 /* ======================================================================== */
+	if       (label.equals("Illustrate Footage")) {
+//		if (LENS_DISTORTIONS==null) {
+//			IJ.showMessage("LENS_DISTORTION is not set"); // to use all grids imported
+//			return;
+//		}
+//		EYESIS_ABERRATIONS.setDistortions(LENS_DISTORTIONS);
+		
+		if (EYESIS_ABERRATIONS.aberrationParameters.illustrationsDirectory.length()>0){
+			File dFile=new File(EYESIS_ABERRATIONS.aberrationParameters.illustrationsDirectory);
+			if (!dFile.isDirectory() &&  !dFile.mkdirs()) {
+				String msg="Failed to create directory "+EYESIS_ABERRATIONS.aberrationParameters.illustrationsDirectory;
+				IJ.showMessage("Warning",msg);
+	    		System.out.println("Warning: "+msg);
+	    		EYESIS_ABERRATIONS.aberrationParameters.illustrationsDirectory=""; // start over with selecting directory
+			}
+		}
+		String configPath=EYESIS_ABERRATIONS.aberrationParameters.selectIllustrationsDirectory(
+				true,
+				EYESIS_ABERRATIONS.aberrationParameters.illustrationsDirectory,
+				true);
+		if (configPath==null){
+    		String msg="No illustrations directory selected, command aborted";
+    		System.out.println("Warning: "+msg);
+    		IJ.showMessage("Warning",msg);
+    		return;
+		}
+		configPath+=Prefs.getFileSeparator()+"config-illustrations";
+		try {
+			saveTimestampedProperties(
+					configPath,      // full path or null
+					null, // use as default directory if path==null
+					true,
+					PROPERTIES);
+
+		} catch (Exception e){
+    		String msg="Failed to save configuration to "+configPath+", command aborted";
+    		System.out.println("Error: "+msg);
+    		IJ.showMessage("Error",msg);
+    		return;
+		}
+		
+		if (CALIBRATION_ILLUSTRATION == null) { //LWIR_PARAMETERS
+			CALIBRATION_ILLUSTRATION = new CalibrationIllustration(
+					LWIR_PARAMETERS,             // LwirReaderParameters           lwirReaderParameters,
+					CALIBRATION_ILLUSTRATION_PARAMETERS, // CalibrationIllustrationParameters illustrationParameters,			
+					EYESIS_ABERRATIONS,          // EyesisAberrations eyesisAberrations,
+					LENS_DISTORTIONS,            // Distortions       distortions,
+					SYNC_COMMAND.stopRequested,  // 	AtomicInteger                  stopRequested,
+					MASTER_DEBUG_LEVEL);         // 		int                            debug_level);
+		}
+		CALIBRATION_ILLUSTRATION.convertCapturedFiles();
+		return;
+	}
+//	
+/* ======================================================================== */
+	if       (label.equals("Illustrate Kernels")) {
+		if (EYESIS_ABERRATIONS.aberrationParameters.illustrationsDirectory.length()>0){
+			File dFile=new File(EYESIS_ABERRATIONS.aberrationParameters.illustrationsDirectory);
+			if (!dFile.isDirectory() &&  !dFile.mkdirs()) {
+				String msg="Failed to create directory "+EYESIS_ABERRATIONS.aberrationParameters.illustrationsDirectory;
+				IJ.showMessage("Warning",msg);
+	    		System.out.println("Warning: "+msg);
+	    		EYESIS_ABERRATIONS.aberrationParameters.illustrationsDirectory=""; // start over with selecting directory
+			}
+		}
+		String configPath=EYESIS_ABERRATIONS.aberrationParameters.selectIllustrationsDirectory(
+				true,
+				EYESIS_ABERRATIONS.aberrationParameters.illustrationsDirectory,
+				true);
+		if (configPath==null){
+    		String msg="No illustrations directory selected, command aborted";
+    		System.out.println("Warning: "+msg);
+    		IJ.showMessage("Warning",msg);
+    		return;
+		}
+		configPath+=Prefs.getFileSeparator()+"config-illustrations";
+		try {
+			saveTimestampedProperties(
+					configPath,      // full path or null
+					null, // use as default directory if path==null
+					true,
+					PROPERTIES);
+
+		} catch (Exception e){
+    		String msg="Failed to save configuration to "+configPath+", command aborted";
+    		System.out.println("Error: "+msg);
+    		IJ.showMessage("Error",msg);
+    		return;
+		}
+		
+		if (CALIBRATION_ILLUSTRATION == null) {
+			CALIBRATION_ILLUSTRATION = new CalibrationIllustration(
+					LWIR_PARAMETERS,             //	LwirReaderParameters           lwirReaderParameters,
+					CALIBRATION_ILLUSTRATION_PARAMETERS, // CalibrationIllustrationParameters illustrationParameters,			
+					EYESIS_ABERRATIONS,          // EyesisAberrations eyesisAberrations,
+					LENS_DISTORTIONS,            // Distortions       distortions,
+					SYNC_COMMAND.stopRequested,  // 	AtomicInteger                  stopRequested,
+					MASTER_DEBUG_LEVEL);         // 		int                            debug_level);
+		}
+	
+		CALIBRATION_ILLUSTRATION.convertKernels(
+				INVERSE.dSize, // int dsize, // direct kernel size
+				INVERSE.rSize // int rsize  // inverse kernel size
+				);
+		return;
+	}
+	
+	/* ======================================================================== */
 	if       (label.equals("Remove bad grids")) {
 		if (LENS_DISTORTIONS==null) {
 			IJ.showMessage("LENS_DISTORTION is not set"); // to use all grids imported
@@ -9451,6 +9567,7 @@ if (MORE_BUTTONS) {
 
 		if (CALIBRATION_ILLUSTRATION == null) {
 			CALIBRATION_ILLUSTRATION = new CalibrationIllustration(
+					LWIR_PARAMETERS,             //	LwirReaderParameters           lwirReaderParameters,
 					CALIBRATION_ILLUSTRATION_PARAMETERS, // CalibrationIllustrationParameters illustrationParameters,			
 					EYESIS_ABERRATIONS,          // EyesisAberrations eyesisAberrations,
 					LENS_DISTORTIONS,            // Distortions       distortions,
@@ -10401,8 +10518,8 @@ if (MORE_BUTTONS) {
 	    			some_type[0] = false;
 	    			some_type[1] = false;
 	    		}
-	    		if (allornone_eo) 	some_type[0] = all_type[0];
-	    		if (allornone_lwir) some_type[1] = all_type[1];
+	    		if (allornone_eo) 	some_type[0] &= all_type[0];
+	    		if (allornone_lwir) some_type[1] &= all_type[1];
 	    		
 	    		if (some_type[0] || some_type[1]) {
 	    			for (int i = 0; i < avail_chn.length; i++) {

src/main/java/com/elphel/imagej/calibration/DistortionCalibrationData.java

@@ -957,9 +957,20 @@ import ij.text.TextWindow;
         			(path.charAt(indexLastDash)!='_') &&
         			(path.charAt(indexLastDash)!='-')) indexLastDash--;
         	return Integer.parseInt(path.substring(indexLastDash+1,indexSuffix));
-        	
         }
-        
+/*        
+        public static double getTimestampFromPath(String path) {
+        	if (path == null) return Double.NaN;
+			int i1=path.indexOf('-',path.lastIndexOf(Prefs.getFileSeparator()));
+			int i2=path.indexOf('-',i1+1);
+			int i3=path.indexOf('.',i2+1);
+			// Extract timestamp from the filename
+			if ((i1<0) || (i2<0)) {
+				return Double.NaN;
+			}
+			return Double.parseDouble(path.substring(i1+1,i2).replace('_','.'));
+        }
+  */      
         private boolean invertColor(int chn) {
         	//TODO: Add looking at the image property to find out if inversion is already contained in the grid files
 			return eyesisCameraParameters.isLWIR(chn);

src/main/java/com/elphel/imagej/calibration/EyesisAberrations.java

@@ -2290,7 +2290,7 @@ public class EyesisAberrations {
 			final int          masterDebugLevel, // get rid of it? // ** NEW
 			final int          globalDebugLevel,// ** NEW
 			final int          debug_level){// debug level used inside loops
-		boolean is_lwir = ((lwirReaderParameters != null) && lwirReaderParameters.is_LWIR(imp_sel));
+		boolean is_lwir = ((lwirReaderParameters != null) && LwirReaderParameters.is_LWIR(imp_sel));
 		boolean is_mono = false;
 		try {
 			is_mono = Boolean.parseBoolean((String) imp_sel.getProperty("MONOCHROME"));
@@ -4785,6 +4785,7 @@ public class EyesisAberrations {
     	public String sourceDirectory="";
     	public String partialKernelDirectory="";
     	public String illustrationsDirectory="";
+    	public String capturedDirectory = "";
     	public String psfKernelDirectory="";
     	public String aberrationsKernelDirectory="";
     	public String calibrationDirectory="";
@@ -4823,10 +4824,10 @@ public class EyesisAberrations {
 			properties.setProperty(prefix+"sourceDirectory",this.sourceDirectory);
 			properties.setProperty(prefix+"partialKernelDirectory",this.partialKernelDirectory);
 			properties.setProperty(prefix+"illustrationsDirectory",this.illustrationsDirectory);
+			properties.setProperty(prefix+"capturedDirectory",     this.capturedDirectory);
 			properties.setProperty(prefix+"psfKernelDirectory",this.psfKernelDirectory);
 			properties.setProperty(prefix+"aberrationsKernelDirectory",this.aberrationsKernelDirectory);
 			properties.setProperty(prefix+"calibrationDirectory",this.calibrationDirectory);
-
 			properties.setProperty(prefix+"autoRestore",this.autoRestore+"");
 			properties.setProperty(prefix+"calibrationPath",this.calibrationPath);
 			properties.setProperty(prefix+"strategyPath",this.strategyPath);
@@ -4869,6 +4870,7 @@ public class EyesisAberrations {
 			if (properties.getProperty(prefix+"sourceDirectory")!=null)	           this.sourceDirectory=properties.getProperty(prefix+"sourceDirectory");
 			if (properties.getProperty(prefix+"partialKernelDirectory")!=null)     this.partialKernelDirectory=properties.getProperty(prefix+"partialKernelDirectory");
 			if (properties.getProperty(prefix+"illustrationsDirectory")!=null)     this.illustrationsDirectory=properties.getProperty(prefix+"illustrationsDirectory");
+			if (properties.getProperty(prefix+"capturedDirectory")!=null)          this.capturedDirectory=properties.getProperty(prefix+"capturedDirectory");
 			if (properties.getProperty(prefix+"psfKernelDirectory")!=null)         this.psfKernelDirectory=properties.getProperty(prefix+"psfKernelDirectory");
 			if (properties.getProperty(prefix+"aberrationsKernelDirectory")!=null) this.aberrationsKernelDirectory=properties.getProperty(prefix+"aberrationsKernelDirectory");
 			if (properties.getProperty(prefix+"calibrationDirectory")!=null)       this.calibrationDirectory=properties.getProperty(prefix+"calibrationDirectory");
@@ -5023,6 +5025,8 @@ public class EyesisAberrations {
     		gd.addCheckbox("Select partial kernels directory", false);
     		gd.addStringField("Illustrations directory", this.illustrationsDirectory, 60);
     		gd.addCheckbox("Select illustrations directory", false);
+    		gd.addStringField("Captured images directory", this.capturedDirectory, 60);
+    		gd.addCheckbox("Select captured images directory", false);
     		gd.addStringField("Combined kernels directory", this.psfKernelDirectory, 60);
     		gd.addCheckbox("Select combined kernsls directory", false);
     		gd.addStringField("Aberrations kernels directory", this.aberrationsKernelDirectory, 60);
@@ -5078,6 +5082,8 @@ public class EyesisAberrations {
     		if (gd.getNextBoolean()) selectPartialKernelDirectory(false, this.partialKernelDirectory, false);
     		this.illustrationsDirectory=gd.getNextString();
     		if (gd.getNextBoolean()) selectIllustrationsDirectory(false, this.illustrationsDirectory, false);
+    		this.capturedDirectory=gd.getNextString();
+    		if (gd.getNextBoolean()) selectCapturedDirectory(false, this.capturedDirectory, false);
     		this.psfKernelDirectory=gd.getNextString();
     		if (gd.getNextBoolean()) selectPSFKernelDirectory(false, this.psfKernelDirectory, false);
     		this.aberrationsKernelDirectory=gd.getNextString();
@@ -5153,6 +5159,18 @@ public class EyesisAberrations {
     		return dir;
     	}
 
+    	public String selectCapturedDirectory(boolean smart, String defaultPath, boolean newAllowed) {
+    		String dir= CalibrationFileManagement.selectDirectory(
+    				smart,
+    				newAllowed, // save
+    				"Captured images directory", // title
+    				"Select captured images directory", // button
+    				null, // filter
+    				defaultPath); //this.sourceDirectory);
+    		if (dir!=null) this.capturedDirectory=dir;
+    		return dir;
+    	}
+    	
     	public String selectPSFKernelDirectory(boolean smart, String defaultPath, boolean newAllowed) {
     		String dir= CalibrationFileManagement.selectDirectory(
     				smart,

src/main/java/com/elphel/imagej/common/GenericJTabbedDialog.java

@@ -325,6 +325,10 @@ public class GenericJTabbedDialog implements ActionListener {
     	} else if (e.getActionCommand().equals("OK")) {
     		result = e.getActionCommand();
     		jd.dispose();
+    		// Added 07/18/2021 - button names starting with "_" exit from dialog
+    	} else if ((e.getActionCommand().length()>0) && (e.getActionCommand().charAt(0) == '_')){
+    		result = e.getActionCommand().substring(1);
+    		jd.dispose();
     	}
 
     }
@@ -332,6 +336,9 @@ public class GenericJTabbedDialog implements ActionListener {
     public boolean wasCanceled() {
     	return (result == null) || (result.equals("Cancel"));
     }
+    public boolean wasOKed() {
+    	return result.equals("OK");
+    }
 
     private boolean skipComments (
     		boolean incTab) { // increment tab if nothing left in this one (false - keep read_component equal to tab's components length

src/main/java/com/elphel/imagej/correction/EyesisCorrections.java

@@ -2721,7 +2721,8 @@ public class EyesisCorrections {
 					if (debugLevel > 0) System.out.println("Saving RGBA result to "+path+".png");
 					(new EyesisTiff()).savePNG_ARGB32(
 							imp,
-							path +".png"
+							path +".png",
+							debugLevel
 							);
 
 				} else {

src/main/java/com/elphel/imagej/jp4/JP46_Reader_camera.java

@@ -1157,7 +1157,7 @@ public class JP46_Reader_camera implements PlugIn, ActionListener {
 		try {
 			url = new URL(cameraurl);
 		} catch (MalformedURLException e) {
-			System.out.println("Bad URL: " + cameraurl);
+			System.out.println("Bad URL4: " + cameraurl);
 			return null;
 		}
 

src/main/java/com/elphel/imagej/lwir/Lwir16Reader.java

@@ -1096,6 +1096,9 @@ public class Lwir16Reader {
 			set_dir.mkdirs(); // including parent
 			LOGGER.warn("Saving image set to: "+set_dir.getAbsolutePath());
 			for (ImagePlus imp:imgs) {
+				if (imp==null) { // channel was not selected?
+					continue; 
+				}
 				String fname = imp.getTitle();
 //				fname = fname.substring(0, fname.lastIndexOf('_')) + ".tiff"; // remove _average
 //				fname = fname.substring(0, fname.lastIndexOf('.')) + ".tiff"; // remove _average
@@ -1199,9 +1202,18 @@ public class Lwir16Reader {
 
 	
 	
+	public boolean programLWIRCamera(LwirReaderParameters lrp) {
+		return  programLWIRCamera(lrp, 0);
+	}
 	
+	/**
+	 * Program all 5 cameras for calibration mode
+	 * @param lrp LWIR Reader parameters
+	 * @param compressor_run 0 - exit with compressors stopped, 2 - keep compressors running
+	 * @return true if OK, false otherwise
+	 */
 	
-	public boolean programLWIRCamera(LwirReaderParameters lrp) {
+	public boolean programLWIRCamera(LwirReaderParameters lrp, int compressor_run) {
 		String [] all_IPs =  lrp.getAllIPs();
 		String [] lwir_IPs = lrp.getLwirIPs();
 		String eo_ip =       lrp.getEOIP();
@@ -1228,12 +1240,13 @@ public class Lwir16Reader {
 					   "&XMIT_TIMESTAMP=1";
 
 		}
-		for (int i = 0; i < lwir_IPs.length; i++) { // Alpply to only 4 lwir cameras, port 0 (some to all ports) 
+		for (int i = 0; i < lwir_IPs.length; i++) { // Apply to only 4 lwir cameras, port 0 (some to all ports) 
 			urls[i] += "&TRIG_DELAY="+lrp.lwir_trig_dly+"&*TRIG_DELAY=15"+ // apply to all ports
 					   "&BITS=16&*BITS=15"+
 					   "&COLOR="+COLOR_RAW +"&*COLOR=15"+
 					   "&WOI_HEIGHT="+(LWIR_HEIGHT + (lrp.lwir_telemetry?LWIR_TELEMETRY_LINES:0))+"&*WOI_HEIGHT=15"+
 					   "&"+REG_FFC_FRAMES+"="+lrp.getFFCFrames() +"&*"+REG_FFC_FRAMES+"=15"; // apply to all channels
+			urls[i] += "&COMPRESSOR_RUN=2&*COMPRESSOR_RUN=15"; // turn compressor and keep fort at least one frame after TRIG=4
 		}
 		
 		for (int chn:lrp.eo_channels) { // add color settings to all EO channels			
@@ -1276,6 +1289,9 @@ public class Lwir16Reader {
 	   					"&WOI_TOP=0"+
 	   					"&WOI_WIDTH=2592"+
 	   					"&WOI_HEIGHT=1936";
+	   			if (chn == 0) {
+	   				urls[all_IPs.length-1] += "&COMPRESSOR_RUN=2&*COMPRESSOR_RUN=15"; // turn compressor and keep fort at least one frame after TRIG=4
+	   			}
 	   		}
 		}
 		// run all programming not including TRIG=4
@@ -1303,7 +1319,8 @@ public class Lwir16Reader {
         // set external trigger mode for all LWIR and EO cameras
 		urls = new String[all_IPs.length];
 		for (int i = 0; i < urls.length; i++) {
-			urls[i] = "http://"+all_IPs[i]+"/parsedit.php?immediate&sensor_port=0&TRIG=4&*TRIG=15";
+			urls[i] = "http://"+all_IPs[i]+"/parsedit.php?immediate&sensor_port=0&TRIG=4&*TRIG=15"+
+                    "&COMPRESSOR_RUN=" + compressor_run +"*5&*COMPRESSOR_RUN=15"; // delay turning off COMPRESSOR_RUN
 		}
 		
 		docs = collectXmlResponses(urls);

src/main/java/com/elphel/imagej/lwir/LwirReaderParameters.java

@@ -44,6 +44,9 @@ public class LwirReaderParameters {
 	public final static int []    FFC_GROUPS=          {1,2,4};
 	public static final String [] SENSOR_TYPES = {"EO","LWIR"};
 	public static final String    SENSOR_TYPE =  "SENSOR_TYPE";
+	public final static int       TYPE_EO= 0;
+	public final static int       TYPE_LWIR= 1;
+	
 	protected static int MAX_LWIR_WIDTH =     1024; //
 	
 	private boolean parameters_updated =     false;
@@ -168,7 +171,7 @@ public class LwirReaderParameters {
 	public int [] getTypeMap() { // eo - 0, lwir - 1
 		int [] types = new int [getNumChannels()];
 		for (int i = 0; i < types.length; i++) {
-			types[i] = (i >= getEoChn0())? 0 : 1;
+			types[i] = (i >= getEoChn0())? TYPE_EO : TYPE_LWIR;
 		}
 		return types;
 	}
@@ -195,7 +198,7 @@ public class LwirReaderParameters {
 		if (imp.getProperty(SENSOR_TYPE)!=null) {
 			return (is_LWIR((String) imp.getProperty(SENSOR_TYPE)))? 1:0;
 		}
-		return is_LWIR(imp.getWidth())? 1 : 0;
+		return is_LWIR(imp.getWidth())? TYPE_LWIR : TYPE_EO;
 		
 	}
 

src/main/java/com/elphel/imagej/readers/ElphelJp4Reader.java

@@ -172,7 +172,7 @@ public class ElphelJp4Reader  extends ImageIOReader{
 			try {
 				url = new URL(id);
 			} catch (MalformedURLException e) {
-				LOGGER.warn("Bad URL: " + id);
+				LOGGER.warn("Bad URL1: " + id);
 			}
 			if (url != null) {
 				LOGGER.debug("Starting initFile() method, read "+ id +" to memory first");

src/main/java/com/elphel/imagej/readers/ElphelTiffReader.java

@@ -26,6 +26,7 @@
  **
  */
 package com.elphel.imagej.readers;
+import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.MalformedURLException;
@@ -187,11 +188,21 @@ public class ElphelTiffReader extends TiffReader{ // BaseTiffReader {
 			  url = null;
 			  //	 		String mime = null; // use to select jp4/tiff later? Or to check it is correct
 			  content_fileName = null;
+			  boolean bad_file = false;
+			  try {
+				  File test_file = new File(id);
+				  test_file.getCanonicalPath();
+			  } catch (IOException e) {
+				  bad_file = true;
+			  }
+			  if (bad_file) {
 				  try {
 					  url = new URL(id);
 				  } catch (MalformedURLException e) {
-				  LOGGER.warn("Bad URL: " + id);
+					  LOGGER.warn("Bad URL2: " + id);
 				  }
+			  }
+
 			  if (url != null) {
 				  LOGGER.debug("Starting initFile() method, read "+ id +" to memory first");
 				  //https://www.rgagnon.com/javadetails/java-0487.html

src/main/java/com/elphel/imagej/readers/EyesisTiff.java

@@ -258,10 +258,24 @@ the type of pixel data in this file 	getPixelType()
 			ImagePlus imp,
 			String path
 			){
+		savePNG_ARGB32(
+				imp,
+				path,
+				1 // will print - for cdompatibility with older code
+				);
+	}
+	
+	public void savePNG_ARGB32(
+			ImagePlus imp,
+			String path,
+			int debug_level
+			){
 		int width = imp.getWidth();
 		int height = imp.getHeight();
 		int [] pixels = (int []) imp.getProcessor().getPixels();
+		if (debug_level > 0) {
 			System.out.println("savePNG_ARGB32("+path+"): width="+width+", height="+height+" length="+pixels.length);
+		}
 
 		DataBufferInt buffer = new DataBufferInt(pixels, pixels.length);
 

src/main/java/com/elphel/imagej/readers/ImagejJp4Tiff.java

@@ -28,6 +28,7 @@
  */
 package com.elphel.imagej.readers;
 
+import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.MalformedURLException;
@@ -141,13 +142,26 @@ public class ImagejJp4Tiff {
 	public ImagePlus readTiffJp4(String path_url, boolean scale, String std ) throws IOException, FormatException { // std - include non-elphel properties with prefix std
 		// determine if it is a file or URL and read url to memory
 		// If URL, then read to memory, if normal file - use direct access
+		if (path_url == null) {
+			LOGGER.warn("readTiffJp4(): null path_url");
+			return null;
+		}
 		url = null;
 		//	 		String mime = null; // use to select jp4/tiff later? Or to check it is correct
 		content_fileName = null;
+		boolean bad_file = false;
+		try {
+			File test_file = new File(path_url); // null
+			test_file.getCanonicalPath();
+		} catch (IOException e) {
+			bad_file = true;
+		}
+		if (bad_file) {
 			try {
 				url = new URL(path_url);
 			} catch (MalformedURLException e) {
-			LOGGER.warn("Bad URL: " + path_url);
+				LOGGER.warn("Bad URL3: " + path_url);
+			}
 		}
 		//https://stackoverflow.com/questions/39086500/read-http-response-header-and-body-from-one-http-request-in-java
 		if (url != null) {