feat(face): 添加低阈值检测功能

- 在 FaceConstant 中添加 FACE_LOW_THRESHOLD_PFX 常量
- 在 SearchFaceRespVo 中添加 lowThreshold 字段
- 在 FaceServiceImpl 中实现记录低阈值检测人脸的逻辑
- 在 TaskFaceServiceImpl 中添加低阈值检测的判断和结果设置

src/main/java/com/ycwl/basic/constant/FaceConstant.java

@@ -5,4 +5,5 @@ public class FaceConstant {
     public static final String USER_FACE_DB_NAME="userFace";
     public static final String FACE_USER_URL_PFX="face:user:url:";
     public static final String FACE_RECOGNITION_COUNT_PFX="face:recognition:count:";
+    public static final String FACE_LOW_THRESHOLD_PFX="face:low:threshold:";
 }

src/main/java/com/ycwl/basic/model/task/resp/SearchFaceRespVo.java

@@ -10,4 +10,5 @@ public class SearchFaceRespVo {
     private List<Long> sampleListIds;
     private String searchResultJson;
     private Float firstMatchRate;
+    private boolean lowThreshold;
 }

src/main/java/com/ycwl/basic/service/pc/impl/FaceServiceImpl.java

@@ -69,6 +69,7 @@ import java.util.UUID;
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
+import static com.ycwl.basic.constant.FaceConstant.FACE_LOW_THRESHOLD_PFX;
 import static com.ycwl.basic.constant.FaceConstant.FACE_RECOGNITION_COUNT_PFX;
 import static com.ycwl.basic.constant.FaceConstant.USER_FACE_DB_NAME;
 import static com.ycwl.basic.constant.StorageConstant.USER_FACE;
@@ -333,6 +334,12 @@ public class FaceServiceImpl implements FaceService {
                 }
             } else {
                 log.warn("人脸匹配无结果：faceId={}", faceId);
+                
+                // 检查低阈值检测结果，如果为true则记录该人脸ID到Redis
+                if (scenicDbSearchResult != null && scenicDbSearchResult.isLowThreshold()) {
+                    recordLowThresholdFace(faceId);
+                    log.debug("触发低阈值检测，记录faceId: {}", faceId);
+                }
             }
             
             return scenicDbSearchResult;
@@ -835,4 +842,28 @@ public class FaceServiceImpl implements FaceService {
             log.error("记录人脸识别次数失败：faceId={}", faceId, e);
         }
     }
+
+    /**
+     * 记录低阈值检测的人脸ID到Redis
+     * 
+     * @param faceId 人脸ID
+     */
+    private void recordLowThresholdFace(Long faceId) {
+        if (faceId == null) {
+            return;
+        }
+        
+        try {
+            String redisKey = FACE_LOW_THRESHOLD_PFX + faceId;
+            
+            // 设置标记，表示该人脸ID触发了低阈值检测
+            redisTemplate.opsForValue().set(redisKey, "1", 2, TimeUnit.DAYS);
+            
+            log.debug("记录低阈值检测人脸：faceId={}", faceId);
+            
+        } catch (Exception e) {
+            // 记录失败不应影响主要业务逻辑，只记录错误日志
+            log.error("记录低阈值检测人脸失败：faceId={}", faceId, e);
+        }
+    }
 }

src/main/java/com/ycwl/basic/service/task/impl/TaskFaceServiceImpl.java

@@ -171,6 +171,7 @@ public class TaskFaceServiceImpl implements TaskFaceService {
         request.setLimit(200);
         FaceDetectLog logEntity = FaceDetectLog.quickCreate(reason, request);
         float threshold = 0;
+        float lowThreshold = 100;
         ScenicConfigManager scenicConfig = null;
         if (StringUtils.isNumeric(dbName)) {
             scenicConfig = scenicRepository.getScenicConfigManager(Long.valueOf(dbName));
@@ -178,6 +179,9 @@ public class TaskFaceServiceImpl implements TaskFaceService {
                 if (scenicConfig.getFloat("face_score_threshold") != null) {
                     threshold = scenicConfig.getFloat("face_score_threshold") / 100F;
                 }
+                if (scenicConfig.getFloat("face_score_low_threshold") != null) {
+                    lowThreshold = scenicConfig.getFloat("face_score_low_threshold") / 100F;
+                }
             }
         } else if (StringUtils.isNumeric(dbName.replace(USER_FACE_DB_NAME, ""))) {
             Long scenicId = Long.valueOf(dbName.replace(USER_FACE_DB_NAME, ""));
@@ -186,6 +190,9 @@ public class TaskFaceServiceImpl implements TaskFaceService {
                 if (scenicConfig.getFloat("face_score_threshold") != null) {
                     threshold = scenicConfig.getFloat("face_score_threshold") / 100F;
                 }
+                if (scenicConfig.getFloat("face_score_low_threshold") != null) {
+                    lowThreshold = scenicConfig.getFloat("face_score_low_threshold") / 100F;
+                }
             }
         }
         final float _threshold = threshold;
@@ -212,6 +219,10 @@ public class TaskFaceServiceImpl implements TaskFaceService {
                     .filter(StringUtils::isNumeric)
                     .map(Long::valueOf)
                     .collect(Collectors.toList());
+            float _lowThreshold = lowThreshold;
+            boolean isLowThreshold = records.stream()
+                    .anyMatch(record -> record.getScore() > _lowThreshold);
+            respVo.setLowThreshold(isLowThreshold);
             allFaceSampleIds = records.stream()
                     .map(SearchFaceResultItem::getExtData)
                     .filter(StringUtils::isNumeric)