diff --git a/src/aztec/DetectorTest.rs b/src/aztec/DetectorTest.rs
index fbfae1b..236ebc6 100644
--- a/src/aztec/DetectorTest.rs
+++ b/src/aztec/DetectorTest.rs
@@ -70,7 +70,7 @@ fn test_error_in_parameter_locator_not_compact() {
 #[test]
 fn test_aztec_rxing_result_sample() {
     let matrix = BitMatrix::parse_strings(TEST_BARCODE, "X ", "  ").expect("string parse success");
-    let r = Detector::new(matrix).detect(false);
+    let r = Detector::new(&matrix).detect(false);
     assert!(r.is_ok());
     let r = r.expect("result already tested as ok");
     let res = decoder::decode(&r).expect("decode success");
@@ -114,7 +114,7 @@ fn test_error_in_parameter_locator(data: &str) {
                     // dbg!(copy.to_string());
                     // dbg!(make_larger(&copy, 3).to_string());
                     // The detector doesn't seem to work when matrix bits are only 1x1.  So magnify.
-                    let r = Detector::new(make_larger(&copy, 3)).detect(isMirror);
+                    let r = Detector::new(&make_larger(&copy, 3)).detect(isMirror);
                     assert!(r.is_ok());
                     let r = r.expect("result already tested as ok");
                     assert_eq!(r.getNbLayers(), layers);
@@ -144,14 +144,14 @@ fn test_error_in_parameter_locator(data: &str) {
                     // );
                 }
                 // try {
-                if let Err(res) = detector::Detector::new(make_larger(&copy, 3)).detect(false) {
+                if let Err(res) = detector::Detector::new(&make_larger(&copy, 3)).detect(false) {
                     if let Exceptions::NotFoundException(_msg) = res {
                         // all ok
                     } else {
                         panic!("Only Exceptions::NotFoundException allowed, got {}", res);
                     }
                 } else {
-                    let r = Detector::new(make_larger(&copy, 3)).detect(false);
+                    let r = Detector::new(&make_larger(&copy, 3)).detect(false);
                     assert!(r.is_ok());
                     let r = r.expect("result already tested as ok");
                     assert_eq!(r.getNbLayers(), layers);
diff --git a/src/aztec/aztec_reader.rs b/src/aztec/aztec_reader.rs
index 074e765..9faad3f 100644
--- a/src/aztec/aztec_reader.rs
+++ b/src/aztec/aztec_reader.rs
@@ -51,7 +51,7 @@ impl Reader for AztecReader {
     ) -> Result<RXingResult, Exceptions> {
         // let notFoundException = None;
         // let formatException = None;
-        let mut detector = Detector::new(image.getBlackMatrix().clone());
+        let mut detector = Detector::new(image.getBlackMatrix());
         let points;
         let decoderRXingResult: DecoderRXingResult;
         //  try {
diff --git a/src/aztec/detector.rs b/src/aztec/detector.rs
index acd4578..8b6935f 100644
--- a/src/aztec/detector.rs
+++ b/src/aztec/detector.rs
@@ -42,8 +42,8 @@ const EXPECTED_CORNER_BITS: [u32; 4] = [
  * @author David Olivier
  * @author Frank Yellin
  */
-pub struct Detector {
-    image: BitMatrix,
+pub struct Detector<'a> {
+    image: &'a BitMatrix,
 
     compact: bool,
     nb_layers: u32,
@@ -52,9 +52,9 @@ pub struct Detector {
     shift: u32,
 }
 
-impl Detector {
-    pub fn new(image: BitMatrix) -> Self {
-        Self {
+impl<'a> Detector<'_> {
+    pub fn new(image: &'a BitMatrix) -> Detector<'a> {
+        Detector {
             image,
             compact: false,
             nb_layers: 0,
diff --git a/src/datamatrix/data_matrix_reader.rs b/src/datamatrix/data_matrix_reader.rs
index c4e25af..1d66beb 100644
--- a/src/datamatrix/data_matrix_reader.rs
+++ b/src/datamatrix/data_matrix_reader.rs
@@ -77,7 +77,7 @@ impl Reader for DataMatrixReader {
             decoderRXingResult = DECODER.decode(&bits)?;
             points.clear();
         } else {
-            let detectorRXingResult = Detector::new(image.getBlackMatrix().clone())?.detect()?;
+            let detectorRXingResult = Detector::new(image.getBlackMatrix())?.detect()?;
             decoderRXingResult = DECODER.decode(detectorRXingResult.getBits())?;
             points = detectorRXingResult.getPoints().clone();
         }
diff --git a/src/datamatrix/detector/detector.rs b/src/datamatrix/detector/detector.rs
index 19b9680..ed9d285 100644
--- a/src/datamatrix/detector/detector.rs
+++ b/src/datamatrix/detector/detector.rs
@@ -27,14 +27,14 @@ use super::DatamatrixDetectorResult;
  *
  * @author Sean Owen
  */
-pub struct Detector {
-    image: BitMatrix,
+pub struct Detector<'a> {
+    image: &'a BitMatrix,
     rectangleDetector: WhiteRectangleDetector,
 }
-impl Detector {
-    pub fn new(image: BitMatrix) -> Result<Self, Exceptions> {
-        Ok(Self {
-            rectangleDetector: WhiteRectangleDetector::new_from_image(&image)?,
+impl<'a> Detector<'_> {
+    pub fn new(image: &'a BitMatrix) -> Result<Detector<'a>, Exceptions> {
+        Ok(Detector {
+            rectangleDetector: WhiteRectangleDetector::new_from_image(image)?,
             image,
         })
     }
diff --git a/src/multi/qrcode/detector/multi_detector.rs b/src/multi/qrcode/detector/multi_detector.rs
index 2c5bd88..00b840b 100644
--- a/src/multi/qrcode/detector/multi_detector.rs
+++ b/src/multi/qrcode/detector/multi_detector.rs
@@ -29,10 +29,10 @@ use super::MultiFinderPatternFinder;
  * @author Sean Owen
  * @author Hannes Erven
  */
-pub struct MultiDetector(Detector);
-impl MultiDetector {
-    pub fn new(image: BitMatrix) -> Self {
-        Self(Detector::new(image))
+pub struct MultiDetector<'a>(Detector<'a>);
+impl<'a> MultiDetector<'_> {
+    pub fn new(image: &'a BitMatrix) -> MultiDetector<'a> {
+        MultiDetector(Detector::new(image))
     }
 
     // private static final DetectorRXingResult[] EMPTY_DETECTOR_RESULTS = new DetectorRXingResult[0];
diff --git a/src/multi/qrcode/qr_code_multi_reader.rs b/src/multi/qrcode/qr_code_multi_reader.rs
index 87ab788..44c0522 100644
--- a/src/multi/qrcode/qr_code_multi_reader.rs
+++ b/src/multi/qrcode/qr_code_multi_reader.rs
@@ -50,7 +50,7 @@ impl MultipleBarcodeReader for QRCodeMultiReader {
     ) -> Result<Vec<crate::RXingResult>, crate::Exceptions> {
         let mut results = Vec::new();
         let detectorRXingResults =
-            MultiDetector::new(image.getBlackMatrix().clone()).detectMulti(hints)?;
+            MultiDetector::new(image.getBlackMatrix()).detectMulti(hints)?;
         for detectorRXingResult in detectorRXingResults {
             let mut proc = || -> Result<(), Exceptions> {
                 let decoderRXingResult = decoder::decoder::decode_bitmatrix_with_hints(
diff --git a/src/qrcode/detector/detector.rs b/src/qrcode/detector/detector.rs
index 796acb1..d4e9514 100644
--- a/src/qrcode/detector/detector.rs
+++ b/src/qrcode/detector/detector.rs
@@ -36,14 +36,14 @@ use super::{
  *
  * @author Sean Owen
  */
-pub struct Detector {
-    image: BitMatrix,
+pub struct Detector<'a> {
+    image: &'a BitMatrix,
     resultPointCallback: Option<RXingResultPointCallback>,
 }
 
-impl Detector {
-    pub fn new(image: BitMatrix) -> Self {
-        Self {
+impl<'a> Detector<'_> {
+    pub fn new(image: &'a BitMatrix) -> Detector<'a> {
+        Detector {
             image,
             resultPointCallback: None,
         }
diff --git a/src/qrcode/detector/cetector_test.rs b/src/qrcode/detector/detector_test.rs
similarity index 94%
rename from src/qrcode/detector/cetector_test.rs
rename to src/qrcode/detector/detector_test.rs
index 34e4204..109fb10 100644
--- a/src/qrcode/detector/cetector_test.rs
+++ b/src/qrcode/detector/detector_test.rs
@@ -32,7 +32,8 @@ fn test_encode_decode(value: &str) {
         let byt_matrix = qr_code.getMatrix().as_ref().unwrap().clone();
         // dbg!(BitMatrix::from(byt_matrix.clone()).to_string());
         // let mut detector = Detector::new(make_larger(&byt_matrix.into(),5));
-        let mut detector = Detector::new(byt_matrix.into());
+        let new_matrix : &BitMatrix = &byt_matrix.into();
+        let mut detector = Detector::new(new_matrix);
         let detected_points = detector.detect().expect("must detect");
         let decoded = decoder::decode_bitmatrix(detected_points.getBits()).expect("must decode");
         assert_eq!(decoded.getText(), value);
diff --git a/src/qrcode/detector/mod.rs b/src/qrcode/detector/mod.rs
index eee527e..be21fa4 100644
--- a/src/qrcode/detector/mod.rs
+++ b/src/qrcode/detector/mod.rs
@@ -15,4 +15,4 @@ pub use finder_pattern_info::*;
 pub use qrcode_detector_result::*;
 
 #[cfg(test)]
-mod cetector_test;
+mod detector_test;
diff --git a/src/qrcode/qr_code_reader.rs b/src/qrcode/qr_code_reader.rs
index 5be7777..4b9ce70 100644
--- a/src/qrcode/qr_code_reader.rs
+++ b/src/qrcode/qr_code_reader.rs
@@ -67,7 +67,7 @@ impl Reader for QRCodeReader {
             points = Vec::new();
         } else {
             let detectorRXingResult =
-                Detector::new(image.getBlackMatrix().clone()).detect_with_hints(&hints)?;
+                Detector::new(image.getBlackMatrix()).detect_with_hints(&hints)?;
             decoderRXingResult =
                 decoder::decode_bitmatrix_with_hints(detectorRXingResult.getBits(), &hints)?;
             points = detectorRXingResult.getPoints().clone();