Variable Frame Rate Preview for Digital Camera Slow Motion
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Solution Overview
Problem
Users of digital cameras with variable frame rates find it difficult to intuitively recognize the impact of frame rate changes, leading to cumbersome processes of capturing, reviewing, and re-recording images to achieve desired slow motion effects.
Innovation Solution
A display control device and method that initiates special reproduction of images with variable frame rates on a display device at a different rate, allowing users to preview and quickly decide on the optimal frame rate for desired slow motion images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a user captures images with different frame rates to check the slow motion effect, then the user can recognize the influence of frame rate changes, but the process becomes troublesome and time-consuming
Solution Approach 1:
The system performs preliminary action by automatically generating and displaying a preview image showing the slow motion effect before the user actually captures the image. The preview image generation unit creates a thumbnail that simulates how the captured image will appear when played back at slow motion, allowing users to evaluate the frame rate effect in advance without repeating capture-review cycles
Solution Approach 2:
The system creates a copy of the captured image data to generate a preview thumbnail that represents the slow motion effect. Instead of requiring users to capture and review full-resolution images repeatedly, the system generates a lower-resolution preview copy that efficiently communicates the frame rate influence, reducing the time and resources needed for evaluation
2Adaptability or versatility
If the frame rate is changed slightly (e.g., 1 fps), then the image quality changes subtly, but users cannot intuitively recognize the influence
Solution Approach 1:
The system applies visual emphasis techniques to highlight subtle differences in the preview image. By using visual cues such as coloring or emphasizing specific regions where motion differences are apparent, the system makes subtle frame rate changes more perceptible to users, enabling them to intuitively recognize the influence of slight frame rate adjustments
Solution Approach 2:
The system adds a new dimension to frame rate evaluation by displaying the preview image alongside the normal playback image or by showing the preview in a dedicated region. This dimensional separation allows users to directly compare the slow motion effect with normal playback, making subtle frame rate influences more apparent through side-by-side visualization
3Productivity
If a preview of slow motion image is displayed, then users can check the impression and decide frame rate quickly, but additional processing is required
Solution Approach 1:
The system extracts only the essential information needed to evaluate slow motion effect by generating a thumbnail preview rather than processing and displaying full-resolution images. The preview image generation unit extracts key motion characteristics and presents them in a condensed visual format, reducing processing requirements while maintaining the ability to evaluate frame rate influence
Solution Approach 2:
The system performs partial processing by generating preview thumbnails at lower resolution and with reduced processing intensity compared to full image capture and review. This partial action approach provides sufficient information for frame rate evaluation without requiring complete processing of high-resolution images, thereby reducing device complexity while maintaining productivity
Data Source
AI summary
The present technology relates to a display control device and a display control method that enable a user to quickly decide the frame rate of an image. In response to a predetermined situation change, special reproduction is started for displaying an image having a variable frame rate on a display device at a display rate different from the frame rate. The present technology can be applied to, for example, a digital camera or the like capable of capturing an image by changing the frame rate.