Inference or prediction of a task returns a list of `Results` objects. Alternatively, in the streaming mode, it returns a generator of `Results` objects which is memory efficient. Streaming mode can be enabled by passing `stream=True` in predictor's call method. !!! example "Predict" === "Getting a List" ```python inputs = [img, img] # list of np arrays results = model(inputs) # List of Results objects for result in results: boxes = result.boxes # Boxes object for bbox outputs masks = result.masks # Masks object for segmenation masks outputs probs = result.probs # Class probabilities for classification outputs ``` === "Getting a Generator" ```python inputs = [img, img] # list of numpy arrays results = model(inputs, stream=True) # generator of Results objects for r in results: boxes = r.boxes # Boxes object for bbox outputs masks = r.masks # Masks object for segmenation masks outputs probs = r.probs # Class probabilities for classification outputs ``` ## Working with Results Results object consists of these component objects: - `Results.boxes` : `Boxes` object with properties and methods for manipulating bboxes - `Results.masks` : `Masks` object used to index masks or to get segment coordinates. - `Results.prob` : `torch.Tensor` containing the class probabilities/logits. Each result is composed of torch.Tensor by default, in which you can easily use following functionality: ```python results = results.cuda() results = results.cpu() results = results.to("cpu") results = results.numpy() ``` ### Boxes `Boxes` object can be used index, manipulate and convert bboxes to different formats. The box format conversion operations are cached, which means they're only calculated once per object and those values are reused for future calls. - Indexing a `Boxes` objects returns a `Boxes` object ```python results = model(inputs) boxes = results[0].boxes box = boxes[0] # returns one box box.xyxy ``` - Properties and conversions ```python boxes.xyxy # box with xyxy format, (N, 4) boxes.xywh # box with xywh format, (N, 4) boxes.xyxyn # box with xyxy format but normalized, (N, 4) boxes.xywhn # box with xywh format but normalized, (N, 4) boxes.conf # confidence score, (N, 1) boxes.cls # cls, (N, 1) boxes.data # raw bboxes tensor, (N, 6) or boxes.boxes . ``` ### Masks `Masks` object can be used index, manipulate and convert masks to segments. The segment conversion operation is cached. ```python results = model(inputs) masks = results[0].masks # Masks object masks.segments # bounding coordinates of masks, List[segment] * N masks.data # raw masks tensor, (N, H, W) or masks.masks ``` ### probs `probs` attribute of `Results` class is a `Tensor` containing class probabilities of a classification operation. ```python results = model(inputs) results[0].probs # cls prob, (num_class, ) ``` Class reference documentation for `Results` module and its components can be found [here](reference/results.md)