Added iOS Image Segmenter Result

mediapipe/tasks/ios/vision/image_segmenter/BUILD

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+# Copyright 2023 The MediaPipe Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+package(default_visibility = ["//mediapipe/tasks:internal"])
+
+licenses(["notice"])
+
+objc_library(
+    name = "MPPImageSegmenterResult",
+    srcs = ["sources/MPPImageSegmenterResult.m"],
+    hdrs = ["sources/MPPImageSegmenterResult.h"],
+    deps = [
+        "//mediapipe/tasks/ios/vision/core:MPPMask",
+        "//mediapipe/tasks/ios/core:MPPTaskResult",
+    ],
+)
+

mediapipe/tasks/ios/vision/image_segmenter/sources/MPPImageSegmenterResult.h

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+// Copyright 2023 The MediaPipe Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import <Foundation/Foundation.h>
+#import "mediapipe/tasks/ios/core/sources/MPPTaskResult.h"
+#import "mediapipe/tasks/ios/vision/core/sources/MPPMask.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Represents the segmentation results generated by `MPPImageSegmenter`. */
+NS_SWIFT_NAME(ImageSegmenterResult)
+@interface MPPImageSegmenterResult : MPPTaskResult
+
+/** An optional array of `MPPMask` objects. Each `MPPMask` in the array holds a 32 bit float array
+ * of size `image width` * `image height` which represents the confidence mask for each category.
+ * Each element of the float array represents the confidence with which the model predicted that the
+ * corresponding pixel belongs to the category that the mask represents, usually in the range [0,
+ * 1]. */
+@property(nonatomic, readonly, nullable) NSArray<MPPMask *> *confidenceMasks;
+
+/** An optional `MPPMask` that holds a`UInt8` array of size `image width` * `image height`. Each
+ * element of this array represents the class to which the pixel in the original image was predicted
+ * to belong to. */
+@property(nonatomic, readonly, nullable) MPPMask *categoryMask;
+
+/**
+ * The quality scores of the result masks, in the range of [0, 1]. Defaults
+ * to `1` if the model doesn't output quality scores. Each element corresponds to the score of
+ * the category in the model outputs.
+ */
+@property(nonatomic, readonly, nullable) NSArray<NSNumber *> *qualityScores;
+
+/**
+ * Initializes a new `MPPImageSegmenterResult` with the given array of confidence masks, category
+ * mask, quality scores and timestamp (in milliseconds).
+ *
+ * @param confidenceMasks An optional array of `MPPMask` objects. Each `MPPMask` in the array must
+ * be of type `MPPMaskDataTypeFloat32`.
+ * @param categoryMask An optional `MPMask` object of type `MPPMaskDataTypeUInt8`.
+ * @param qualityScores The quality scores of the result masks of type NSArray<NSNumber *> *. Each
+ * `NSNumber` in the array holds a `float`.
+ * @param timestampInMilliseconds The timestamp (in milliseconds) for this result.
+ *
+ * @return An instance of `MPPImageSegmenterResult` initialized with the given array of confidence
+ * masks, category mask, quality scores and timestamp (in milliseconds).
+ */
+- (instancetype)initWithConfidenceMasks:(nullable NSArray<MPPMask *> *)confidenceMasks
+                          categoryMasks:(nullable MPPMask *)categoryMask
+                          qualityScores:(nullable NSArray<NSNumber *> *)qualityScores
+                timestampInMilliseconds:(NSInteger)timestampInMilliseconds;
+
+@end
+
+NS_ASSUME_NONNULL_END

mediapipe/tasks/ios/vision/image_segmenter/sources/MPPImageSegmenterResult.m

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+// Copyright 2023 The MediaPipe Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "mediapipe/tasks/ios/vision/image_segmenter/sources/MPPImageSegmenterResult.h"
+
+@implementation MPPImageSegmenterResult
+
+- (instancetype)initWithConfidenceMasks:(NSArray<MPPMask *> *)confidenceMasks
+                           categoryMask:(MPPMask *)categoryMask
+                          qualityScores:(NSArray<NSNumber *> *)qualityScores
+                timestampInMilliseconds:(NSInteger)timestampInMilliseconds {
+  self = [super initWithTimestampInMilliseconds:timestampInMilliseconds];
+  if (self) {
+    _confidenceMasks = confidenceMasks;
+    _categoryMask = categoryMask;
+    _qualityScores = qualityScores;
+  }
+  return self;
+}
+
+@end