Mobile Terminal Image Cropping via Touchscreen Preview
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Solution Overview
Problem
Existing mobile terminals lack an efficient method for easily controlling the size of instantly photographed image data, which hinders convenient multimedia content transmission.
Innovation Solution
A mobile terminal with a camera and touchscreen that outputs a running screen and preview screen, allowing image data to be attached to a prescribed application based on the size of a designated region on the touchscreen, enabling easy control and transmission of photographed images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If image data is instantly photographed through a camera for transmission, then transmission speed is improved, but the size of image data cannot be easily controlled
Solution Approach 1:
The system performs preliminary action by displaying a preview screen showing the photographed image data before transmission occurs. This allows the user to view and assess the image size in advance, enabling informed decisions about whether to proceed with transmission or adjust settings, thus resolving the contradiction between fast transmission and controlled image size management
2Measurement precision
If the camera captures high-resolution images for instant transmission, then image quality is improved, but memory usage and transmission time increase
Solution Approach 1:
The system applies dynamics by providing a variable-size image selection mechanism where users can dynamically adjust the portion of image data to be transmitted. The preview screen displays the captured image, and users can select to transmit only necessary portions or adjust quality levels, making transmission time flexible rather than fixed, thus balancing image quality with transmission efficiency
3Ease of operation
If a preview screen is displayed to show photographed image data, then user control over image size is improved, but device complexity increases
Solution Approach 1:
The system applies universality by integrating the preview screen functionality into the existing camera and transmission interface. The same display hardware and processing units used for normal camera operation and image transmission are utilized to show the preview, avoiding the need for separate dedicated hardware. This multi-functional approach provides user control over image size while minimizing additional device complexity
Data Source
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AI summary
The present application relates to a mobile terminal comprising a first camera; a memory for storing a message transceiving application; a touchscreen; and a controller configured to cause the touchscreen to display a running screen of the message transceiving application, wherein a preview screen is displayed on a first region of the touchscreen and a first preview image of the first camera is displayed in the preview screen and wherein the controller is further configured to, in response to an attachment command, automatically crop a first portion of a whole camera image and attach an image of the cropped first portion to the message transceiving application. The present invention also relates to a respective method.